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{{Short description|American thrash metal band}}
{{about|the band|their upcoming self-titled album|Megadeth (album){{!}}''Megadeth '' (album)}}
{{see Wiktionary|redirect=Megadeath||megadeath}}
{{Featured article}}
{{Use mdy dates|date=October 2025}}
{{Infobox musical artist
| name              = Megadeth
| alias             = Fallen Angels (1983)<ref>{{cite web| url=https://www.loudersound.com/news/david-ellefson-is-no-longer-a-member-of-megadeth| title=David Ellefson is no longer a member of Megadeth|date=September 20, 2022|last=Lewry|first=Fraser|access-date=August 7, 2024|work=[[Metal Hammer]]}}</ref>
| image             = Megadeth at the O2 Arena, London, 26 October 2025.jpg
| caption           = Megadeth performing at [[The O2 Arena]] in October 2025. Left to right: [[James LoMenzo]], [[Dirk Verbeuren]], [[Dave Mustaine]] and [[Teemu Mäntysaari]].
| alt               = A four-piece band performing onstage
| landscape         = yes
| background        = group_or_band
| origin            = [[Los Angeles]], [[California]], U.S.
| genre             = <!--Do not change these genres without discussing on the talk page first.-->{{hlist|[[Thrash metal]]{{sfn|Phillips|Cogan|2009|pp=156-157}}|[[speed metal]]{{sfn|Phillips|Cogan|2009|pp=156-157}}|[[Heavy metal music|heavy metal]]{{sfn|Phillips|Cogan|2009|pp=156-157}}}}
| works             = {{hlist|[[Megadeth discography|Discography]]|[[List of songs recorded by Megadeth|songs]]}}
| years_active      = {{hlist|1983–2002|2004–present}}
| label             = {{hlist|[[Combat Records|Combat]]|[[Capitol Records|Capitol]]|[[Sanctuary Records|Sanctuary]]|[[Roadrunner Records|Roadrunner]]|[[Universal Music Enterprises|Tradecraft]]|[[The Echo Label|Echo]]}}
| website           = {{URL|megadeth.com}}
| module            = {{Infobox
| child=yes
| title             = '''Logo'''
| headerstyle       = background:#b0c4de
| image = [[File:MegadethLogoDileo.png|200px|class=skin-invert]]}}
| current_members   = * [[Dave Mustaine]]
* [[James LoMenzo]]
* [[Dirk Verbeuren]]
* [[Teemu Mäntysaari]]
| past_members      = [[List of Megadeth band members#Former|Full list]]
}}

'''Megadeth''' is an American [[thrash metal]] band formed in Los Angeles in 1983 by vocalist and guitarist [[Dave Mustaine]]. Known for their technically complex guitar work and musicianship, Megadeth is one of the "big four" of American thrash metal—along with [[Slayer]], [[Anthrax (American band)|Anthrax]], and [[Metallica]]<ref name="Allmusic Bio">{{cite web|last=Erlewine|first=Stephen Thomas|title=Megadeth Biography|url=https://www.allmusic.com/artist/megadeth-mn0000406294/biography|website=[[AllMusic]]|access-date=August 24, 2022}}</ref>—and is credited with helping to develop and popularize the genre. Their music features intricate arrangements, fast [[rhythm section]]s, dual lead guitars, and lyrical themes such as war, politics, religion, death, and personal relationships.

In 1985, Megadeth released their debut album, ''[[Killing Is My Business... and Business Is Good!]]'', on the independent record label [[Combat Records]], to moderate success. It caught the attention of bigger labels, which led to Megadeth signing with [[Capitol Records]]. Their first major-label album, ''[[Peace Sells... but Who's Buying?]]'', was released in 1986 and was a major hit with the underground metal scene. Band members' [[substance abuse]] issues and personal disputes had brought Megadeth negative publicity during the late 1980s. Nonetheless, the band went on to release a number of [[Music recording sales certification|platinum-selling albums]], including ''[[So Far, So Good... So What!]]'' (1988), ''[[Rust in Peace]]'' (1990) and ''[[Countdown to Extinction]]'' (1992). These albums, along with worldwide tours, brought them public recognition. Megadeth's most recent album, ''[[The Sick, the Dying... and the Dead!]]'', was released in 2022. On August 14, 2025, Mustaine announced that the band's seventeenth studio album, ''[[Megadeth (album)|Megadeth]]'', and its supporting tour will be their last.

Megadeth has undergone frequent lineup changes throughout its {{Age|1983|4|1}}-year career, with Mustaine being the sole consistent member of the band. The band temporarily disbanded in 2002 when Mustaine suffered an arm injury and re-established in 2004 without longtime bassist [[David Ellefson]], who had [[Ellefson v. Megadeth, Inc.|taken legal action]] against Mustaine. Ellefson settled out of court and rejoined the band in 2010, but was fired in 2021 amid allegations of sexual misconduct. Megadeth's current lineup includes Mustaine, bassist [[James LoMenzo]], guitarist [[Teemu Mäntysaari]] and drummer [[Dirk Verbeuren]].

Megadeth earned platinum certifications in the United States for five of its sixteen studio albums,<ref name="RIAA"/> and [[List of awards and nominations received by Megadeth|has received twelve Grammy nominations]]. Megadeth won its first Grammy Award in [[59th Annual Grammy Awards|2017]] for the song "[[Dystopia (song)|Dystopia]]" in the [[Grammy Award for Best Metal Performance|Best Metal Performance]] category.<ref name=":0">{{Cite web|url=https://www.grammy.com/grammys/artists/megadeth|title=Megadeth|date=March 17, 2014|website=GRAMMY.com|language=en|access-date=January 31, 2019}}</ref> The band's mascot, [[Vic Rattlehead]], regularly appears on album artwork and live shows. Megadeth hosted their own music festival, [[Gigantour]], several times from July 2005 to August 2013, and held its first MegaCruise in October 2019. {{As of|2023}}, the band sold more than 50 million albums worldwide.<ref name="auto">{{cite web|url=https://www.megadeth.com/pages/band|publisher=megadeth.com|title=The Band|date= October 30, 2023|access-date=October 30, 2023}}</ref>

==History==
===1983–1985: Formation and ''Killing Is My Business''===
[[File:Megadeth performing in San Antonio, Texas (27457595376).jpg|thumb|upright|[[Dave Mustaine]] formed Megadeth in 1983, after being fired from [[Metallica]].]]
On April 11, 1983, [[Dave Mustaine]] was dismissed from [[Metallica]] before the band recorded their debut album ''[[Kill 'Em All]]'' due to substance abuse and personal conflicts with [[James Hetfield]] kicking his dog. As Metallica's lead guitarist since 1981, Mustaine had composed some of the group's early songs and helped hone the band into a tight live unit.{{sfn|Mustaine|2010|p=101}}{{sfn|Gulla|2009|p=101}} Afterward, Mustaine vowed revenge by forming a band that was faster and heavier than Metallica.{{sfn|Wagner|2010|p=42}} On the bus trip back to Los Angeles, Mustaine found a pamphlet by California senator [[Alan Cranston]] that read: "The arsenal of megadeath can't be rid no matter what the peace treaties come to."{{sfn|Mustaine|2011|p=87}} The term "Megadeath" stuck with Mustaine and he wrote [[Set the World Afire|a song with that title]] with the spelling slightly changed to Megadeth, which, according to Mustaine, represented the annihilation of power.<ref>{{cite web|last=Summers|first=Jodi Beth|date=June 1987|title=Out to Lunch|work=[[Hit Parader]]|publisher=Rockmetal.art.pl|url=http://megadeth.rockmetal.art.pl/interviews_hitparader1987.html|access-date=November 15, 2013|archive-date=March 3, 2016|archive-url=https://web.archive.org/web/20160303192141/http://megadeth.rockmetal.art.pl/interviews_hitparader1987.html|url-status=dead}}</ref>

After arriving back in Los Angeles, Mustaine began the search for new bandmates for his band. He formed the band Fallen Angels, which included Lor Kane on vocals, Robby McKinney on guitar and Matt Kisselstein on bass, in April 1983.<ref>{{cite web|url=https://www.megadeth.com/blogs/news/439772|title=Scorpion Q+A 304|work=Megadeth.com|access-date=April 18, 2024|date=March 14, 2017}}</ref> The first Megadeth drummer Dijon Carruthers also joined around this time.<ref>{{cite web |title=David Ellefson & Jeff Young: Megadeth's 'So Far, So Good…So What!" Album: The Origin Story of Megadeth – 2022 – Kings of Thrash|url=https://fullinbloom.com/david-ellefson-jeff-young-megadeths-so-far-so-goodso-what-album-the-origin-story-of-megadeth-2022-kings-of-thrash/ |website=Full in Bloom |access-date=June 16, 2025}}</ref> The band's name was changed to Megadeth on Kane's recommendation.<ref>{{cite web|url=https://loudwire.com/how-did-megadeth-get-band-name/|title=How Did Megadeth Get Their Band Name?|date=August 23, 2023|access-date=April 18, 2024|work=[[Loudwire]]|last=DiVita|first=Joe}}</ref>{{efn| Ellefson has stated that Handevidt, rather than Kane, came up with the idea to change the band name.<ref name=blabfeb6>{{cite web |title=DAVID ELLEFSON Says He Is Technically A Founding Member Of MEGADETH|url=https://blabbermouth.net/news/david-elefson-says-he-is-technically-a-founding-member-of-megadeth |website=Blabbermouth.net |access-date=August 28, 2025 |date=February 6, 2016}}</ref>}} As the founder, Mustaine added his new neighbors [[David Ellefson]] and Greg Handevidt to the band, who had moved from Minnesota to Los Angeles and played bass and guitar, respectively.<ref>{{cite book|last=Layden|first=Joe|page=103|year=2011|title=Mustaine: A Heavy Metal Memoir|publisher=HarperCollins Publishers|isbn=9780061714405}}</ref> A demo was recorded by the lineup, which had expanded to include Richard Girod on drums.<ref name=whiplash>{{cite journal|url=https://thecorroseum.org/fanzines/whiplash-usa-01.php|journal=Whiplash|date=1983|title=Megadeath|volume=1|access-date=November 17, 2025|last=Lew|first=Brian|page=4}}</ref> The band realized that they would have to retool some of the songs following the release of Metallica's debut album, in July 1983,<ref>{{cite web|url=https://www.guitarworld.com/features/megadeth-greg-handevidt|title="I'd hear Dave Mustaine aimlessly riffing on the couch, and it's the riffs that ended up on the first two Megadeth – and, frankly, Metallica – records": Megadeth's first lead guitarist Greg Handevidt on the birth of a metal institution|last=Daly|first=Andrew|work=[[Guitar World]]|date=August 2, 2023|access-date=August 3, 2023}}</ref> with "[[Mechanix]]" being the only Metallica-era song on Megadeth's debut album.<ref name=revolverjune12>{{cite web|url=https://www.revolvermag.com/music/8-things-you-didnt-know-about-megadeths-killing-my-business-and-business-good/|title=8 Things You Didn't Know About Megadeth's 'Killing Is My Business… And Business Is Good'|work=[[Revolver (magazine)|Revolver]]|date=June 12, 2018|access-date=February 17, 2025}}</ref> Megadeth songs from the summer of 1983 included "No Time", "Self Destruct", "Hair Pin Trigger", "Speak No Evil", "Eye for Eye" and "Heaven Knows".<ref name=whiplash/> "No Time" was an early title for "Set the World Afire", "Self Destruct" was the original title for "Mary Jane"<ref>{{cite web|url=https://lostmediawiki.com/Megadeath_(lost_Megadeth_demo_tape;_1983)|title=Megadeath (lost Megadeth demo tape; 1983)|work=Lost Media Wiki|access-date=May 1, 2024}}</ref> and "Speak No Evil" was the original title of "Looking Down the Cross."{{sfn|Ellefson|McIver|2013|p=46}}

While Handevidt would only last a few months, Mustaine and Ellefson formed a tight musical bond. Despite his enthusiasm, Mustaine had trouble finding other members to fill out the lineup. He and Ellefson auditioned about 15 drummers, hoping to find one who understood [[Metre (music)|meter]] changes in music.{{sfn|Prown|Newquist|1997|p=227}} After playing with Carruthers (who had rejoined the band in the fall)<ref name=tmv>{{cite web|url=https://www.themetalvoice.com/post/agent-steel-singer-i-was-brought-into-megadeth-early-on-to-crush-metallica-vocally-john-cyriis|work=The Metal Voice|date=March 2, 2023|title=Agent Steel Singer "I Was Brought Into Megadeth, Early On, To Crush Metallica Vocally" John Cyriis|access-date=June 16, 2025}}</ref> and Girod,<ref name=whiplash/> they selected [[Lee Rauch]] in late 1983. The Mustaine/Rauch/Ellefson lineup was completed by the addition of [[Slayer]] guitarist [[Kerry King]], with whom they rehearsed as well.<ref>{{cite web|url=https://fullinbloom.com/megadeth-first-band-rehearsals-w-kerry-king-photos-posted-online-curly-joes-studio-l-a-83-84/|work=Full in Bloom|title=Megadeth: First Band Rehearsals w/ Kerry King/Photos Posted Online @ Curly Joe's Studio, L.A. '83-'84|access-date=June 16, 2025}}</ref>

Singers who temporarily joined the band included Billy Bonds<ref name=revolverjune12/> and [[John Cyriis]], who would found [[Agent Steel]] after his firing from Megadeth.<ref>{{cite web|url=https://bravewords.com/news/agent-steel-founder-vocalist-john-cyriis-on-briefly-joining-megadeth-dave-mustaine-was-not-prepared-to-launch-the-first-album-with-my-lyrical-subjects|title=AGENT STEEL Founder/Vocalist JOHN CYRIIS On Briefly Joining MEGADETH - "DAVE MUSTAINE Was Not Prepared To Launch The First Album With My Lyrical Subjects"|work=[[Brave Words & Bloody Knuckles]]|date=October 24, 2019|access-date=May 12, 2022|archive-date=May 13, 2022|archive-url=https://web.archive.org/web/20220513032247/https://bravewords.com/news/agent-steel-founder-vocalist-john-cyriis-on-briefly-joining-megadeth-dave-mustaine-was-not-prepared-to-launch-the-first-album-with-my-lyrical-subjects|url-status=dead}}</ref> Cyriis joined the band after Carruthers persuaded his other bandmates.<ref name=tmv/> Following six months of trying to find a lead singer, Mustaine decided to perform lead vocals himself.{{sfn|Prown|Newquist|1997|p=227}} 

In 1984, Megadeth recorded a three-song [[demo (music)|demo]] tape featuring Mustaine, Ellefson and Rauch.<ref>{{cite web|url=https://ultimateclassicrock.com/dave-mustaine-metallica-fired/|title=Dave Mustaine After Metallica: 40 Moments for 40 Years|work=Ultimate Classic Rock|date=April 11, 2023|access-date=April 17, 2024}}</ref> The demo tape, ''[[Killing Is My Business... and Business Is Good!#Background|Last Rites]]'', was released on March 9, 1984. It featured early versions of "Last Rites/Loved to Death", "The Skull Beneath the Skin" and "[[Mechanix]]", all of which appeared on the band's debut album.{{sfn|Mustaine|2011|p=124}} 

The band was unable to find a compatible second guitarist. King filled in on rhythm guitar for several shows in the San Francisco area in 1984, starting with the debut gig on February 17 at [[Ruthie's Inn]] in [[Berkeley, California|Berkeley]], [[California]],<ref>{{cite web|title=First Show Played 37 Years Ago Today|url=https://www.megadeth.com/blogs/news/first-show-played-37-years-ago-today|work=Megadeth.com|date=February 18, 2021|access-date=March 31, 2025}}</ref> as well as a gig at [[Keystone (Berkeley, California)|The Keystone]] in Berkeley that April<ref>{{cite web|title=Watch Slayer's Kerry King thrash it up onstage with Megadeth… in 1984|url=https://www.loudersound.com/features/megadeth-slayer-video-kerry-king-dave-mustaine-1984|work=[[Metal Hammer]]|date=September 20, 2022|access-date=April 18, 2024}}</ref> and would play five shows in total with the band.<ref>{{cite web|last=Doe|first=Bernard|title=DAVID ELLEFSON Looks Back On KERRY KING's 1984 Shows With MEGADETH: He Was 'Incredible'|url=https://blabbermouth.net/news/david-ellefson-looks-back-on-kerry-kings-1984-shows-with-megadeth-he-was-incredible|work=[[Blabbermouth.net]]|date=September 25, 2020|access-date=April 17, 2024}}</ref> King went back to Slayer<ref>{{cite web|url=https://guitar.com/news/music-news/dave-would-show-him-something-and-hed-fkin-play-it-right-back-david-ellefson-on-kerry-kings-brief-tenure-in-megadeth/|title="Dave would show him something, and he'd f**kin' play it right back": David Ellefson on Kerry King's brief tenure in Megadeth|work=[[Guitar.com]]|access-date=June 16, 2025|date=January 16, 2024|last=Swingle|first=Emily}}</ref> and Rauch was briefly replaced with Minnesota drummer Brett Frederickson, with whom Ellefson had previously played.<ref>{{cite web|url=https://www.heritagefuneralchapels.com/obituaries/Brett-Douglas-Frederickson?obId=4069973|title=Obituary information for Brett Douglas Frederickson|work=Heritage Funeral Chapels|access-date=December 2, 2023|archive-date=December 4, 2023|archive-url=https://web.archive.org/web/20231204075648/https://www.heritagefuneralchapels.com/obituaries/Brett-Douglas-Frederickson?obId=4069973|url-status=live}}</ref> [[Jazz fusion]] drummer [[Gar Samuelson]] joined the band in late 1984 and the band played a few gigs as a three piece band,<ref>{{cite web|url=https://www.megadeth.com/blogs/news/on-this-day-in-1984|work=Megadeth|date=November 3, 2020|title=On This Day in 1984|access-date=June 16, 2025}}</ref> with Samuelson officially joining Megadeth on October 24, 1984.<ref>{{cite web|url=https://rockcelebrities.net/dave-mustaines-remorse-about-megadeths-gar-samuelson/|title=Dave Mustaine's Remorse About Megadeth's Gar Samuelson|work=Rock Celebrities|date=November 4, 2022|access-date=August 3, 2023|last=Cobanoglu|first=Cansu}}</ref> Samuelson had previously been in the jazz band The New Yorkers with guitarist [[Chris Poland]].<ref>{{cite web|url=https://www.classicrockhistory.com/chris-poland-the-classicrockhistory-com-interview/|title=Chris Poland: The ClassicRockHistory.com Interview|work=Classic Rock History.com|date=|access-date=August 3, 2023|last=Montalbano|first=Anthony}}</ref> After seeing Samuelson perform with Megadeth as a trio, Poland went backstage and suggested an impromptu audition as lead guitarist for the band; he joined Megadeth in December 1984.{{sfn|Wagner|2010|p=42}}

After considering several labels, Mustaine signed the band to [[Combat Records]], a New York-based [[Independent record label]] that offered Megadeth the highest budget to record and tour.<ref name="Metal Forces">{{cite web|last=Doe|first=Bernard|title=Megadeth&nbsp;– Love It To Death|url=http://www.metalforcesmagazine.com/site/feature-megadeth-mf12/|work=[[Metal Forces]]|date=December 1985|access-date=November 13, 2013}}</ref> In 1985, Combat Records gave the band $8,000 to record and produce its debut album. After spending $4,000 of the budget on drugs, alcohol and food, the band fired the original producer and finished the recording themselves.{{sfn|Ellefson|McIver|2013|p=53}}

Despite its low-[[fidelity]] sound,{{sfn|Ellefson|McIver|2013|p=55}} ''[[Killing Is My Business... and Business Is Good!]]'' was relatively successful in underground metal circles and attracted major-label interest.{{sfn|Bukszpan|2003|p=242}} The band was calling itself State Of The Art Speed Metal.<ref>{{cite web|url=https://www.metallian.com/megadeth.php|title=Megadeth Biography|website=metallian|access-date=August 1, 2022|date=August 1, 2022}}</ref> Music writer [[Joel McIver]] praised its "blistering technicality" and stated that the album "raised the bar for the whole thrash metal scene, with guitarists forced to perform even more accurately and powerfully".{{sfn|McIver|2008|loc=Chapter 7}} The front cover marked the debut of band mascot [[Vic Rattlehead]], who regularly appeared on subsequent album artwork.<ref>{{cite news|title=Megadeth: The Making Of The New 'Vic Rattlehead' Mask|url=http://www.blabbermouth.net/news/megadeth-the-making-of-the-new-vic-rattlehead-mask-video/|work=[[Blabbermouth.net]]|date=October 2, 2012|access-date=March 6, 2013}}</ref>

''Killing Is My Business... and Business Is Good!'' features "Mechanix", a song Mustaine wrote during his time with Metallica. Though Mustaine told the band after his dismissal not to use the music he had written, Metallica recorded a different version of the song, "The Four Horsemen", with a slower tempo and a melodic middle section.<ref>{{cite web|first=Josh|last=Hart|url=https://www.guitarworld.com/dave-mustaine-early-days-metallica-i-had-always-called-us-four-horsemen|title=Dave Mustaine on Early Days With Metallica: "I Had Always Called Us the 'Four Horsemen'"|work=[[Revolver (magazine)|Revolver]]|publisher=[[Guitar World]]|date=August 15, 2011|access-date=November 16, 2013|archive-url=https://web.archive.org/web/20131212011659/http://www.guitarworld.com/dave-mustaine-early-days-metallica-i-had-always-called-us-four-horsemen|archive-date=December 12, 2013|url-status=dead}}</ref> The album also included a cover of [[Nancy Sinatra]]'s "[[These Boots Are Made for Walkin']]{{Thin space}}", at a faster tempo and with altered lyrics. Megadeth's version generated controversy during the 1990s, when its writer, [[Lee Hazlewood]], called Mustaine's changes "vile and offensive".<ref>{{cite book|title=Killing Is My Business... and Business Is Good! ''liner notes (2002 reissue)''|year=2002|publisher=[[Loud Records]]|page=8}}</ref> Under threat of legal action, the song was removed from pressings released from 1995 to 2001.<ref name="Popmatters">{{cite magazine|last=Begrand|first=Adrien|magazine=[[PopMatters]]|date=April 30, 2002|url=https://www.popmatters.com/review/megadeath-killing/|title=Megadeth: Killing is My Business... and Business is Good!|access-date=November 16, 2013}}</ref>

In mid-1985, on a bill with Canadian speed metal band [[Exciter (band)|Exciter]], Megadeth played its first North American tour: the Killing for a Living Tour. Guitarist [[Mike Albert]] replaced Poland, who was battling drug addiction.{{sfn|Ellefson|McIver|2013|pp=55–56}} Although Albert was originally supposed to be a permanent replacement,<ref name="Metal Forces"/> Poland rejoined Megadeth in October 1985, shortly before the group began recording its second album for Combat.{{sfn|Ellefson|McIver|2013|p=58}}

===1986–1987: ''Peace Sells... but Who's Buying?''===
According to Mustaine, Megadeth was under pressure to deliver another successful album: "That sophomore offering is the 'be-all or end-all' of any band. You either go to the next level, or it's the beginning of the [[nadir]]."<ref>{{cite news|last=Kot|first=Greg|title=Megadeth's Dave Mustaine says he and Metallica have hugged out|url=http://articles.chicagotribune.com/2010-08-20/entertainment/ct-ott-0820-megadeth-20100820_1_metallica-thrash-metal-megadeth|newspaper=[[Chicago Tribune]]|date=August 15, 2010|access-date=November 17, 2013|archive-date=December 17, 2013|archive-url=https://web.archive.org/web/20131217044616/http://articles.chicagotribune.com/2010-08-20/entertainment/ct-ott-0820-megadeth-20100820_1_metallica-thrash-metal-megadeth|url-status=dead}}</ref> Mustaine composed the music for the album, with the other members adding arrangement ideas.{{sfn|Tarquin|2012|p=72}}

The album was produced on a $25,000 budget from Combat Records. Dissatisfied with its financial limitations, the band left Combat and signed with [[Capitol Records]]. Capitol bought the rights to the album, and hired producer Paul Lani to remix the earlier recordings. Released in late 1986, ''[[Peace Sells... but Who's Buying?]]'' has clearer production and more sophisticated songwriting.{{sfn|Konow|2009|p=243}} Mustaine wanted to write socially conscious lyrics, unlike mainstream heavy metal bands who sang about "hedonistic pleasures".<ref>{{cite news|last=Matsumoto|first=Jon|title=Megadeth: These Heavy Metalers Thrash For Peace|url=https://www.latimes.com/archives/la-xpm-1986-10-16-ca-5888-story.html|newspaper=[[Los Angeles Times]]|date=October 16, 1986|access-date=November 15, 2013}}</ref> The album was noted for its political commentary and helped Megadeth expand its fanbase.{{sfn|Talevski|2010|p=570}} The [[Peace Sells|title track]] was the album's second single, and was accompanied by a music video that received regular airplay on [[MTV]].{{sfn|Ellefson|McIver|2013|p=61}}

In February 1987, Megadeth was the opening act on [[Alice Cooper]]'s ''[[Constrictor (album)|Constrictor]]'' tour,<ref name="Chicago">{{cite news|last=Popson|first=Tom|date=February 6, 1987|url=https://www.chicagotribune.com/1987/02/06/megadeth-hed-to-go-here/|title=Megadeth Hed To Go Here|newspaper=[[Chicago Tribune]]|access-date=November 15, 2013}}</ref> and the following month began its first headlining world tour in the United Kingdom. The 72-week tour was supported by [[Overkill (band)|Overkill]] and [[Necros]], and continued in the United States.{{sfn|Rees|Crampton|1999|p=658}} During the tour, Mustaine and Ellefson considered firing Samuelson for his drug abuse.{{sfn|Konow|2009|p=244}} According to Mustaine, Samuelson had become too much to handle when intoxicated. Drummer [[Chuck Behler]] traveled with Megadeth for the last dates of the tour as the other band members feared Samuelson would not be able to continue.<ref name="Samuelson"/> Poland quarreled with Mustaine, and was accused of selling band equipment to buy heroin.{{sfn|Konow|2009|p=244}} As a result, Samuelson and Poland were asked to leave Megadeth in 1987, with Behler becoming the band's full-time drummer.{{sfn|Rees|Crampton|1999|p=658}}

Poland was initially replaced by Jay Reynolds of [[Malice (American band)|Malice]], but as the band began working on its next record, Reynolds was replaced by his guitar teacher, [[Jeff Young]], when Megadeth was six weeks into the recording of its third album.<ref name="Samuelson">{{cite web|first=Celesete|last=Gomes|title=So Far, So Good For Megadeth|url=http://megadeth.rockmetal.art.pl/interviews_rock1988.html|work=[[Classic Rock (magazine)|Classic Rock]]|publisher=Rockmetal.art.pl|date=August 1988|access-date=November 8, 2013|archive-date=July 20, 2009|archive-url=https://web.archive.org/web/20090720120651/http://megadeth.rockmetal.art.pl/interviews_rock1988.html|url-status=dead}}</ref>

===1988–1989: ''So Far, So Good... So What!''===
With a major-label budget, the Paul Lani-produced ''[[So Far, So Good... So What!]]'' took over five months to record. The production was plagued with problems, partially due to Mustaine's struggle with drug addiction. Mustaine later said: "The production of ''So Far, So Good... So What!'' was horrible, mostly due to substances and the priorities we had or didn't have at the time." Mustaine clashed with Lani, beginning with Lani's insistence that the drums be recorded separately from the cymbals, an unheard-of process for rock drummers.<ref name="SFSGSWNotes">{{Cite AV media notes|title=So Far, So Good... So What! (2004 reissue)|type=liner notes|year=2004|publisher=[[Capitol Records]]|page=2}}</ref> Mustaine and Lani became estranged during the mixing, and Lani was replaced by [[Michael Wagener]], who remixed the album.{{sfn|Ellefson|McIver|2013|p=71}}

''So Far, So Good... So What!'' was released in January 1988 and was well received by fans and critics.<ref>{{cite web|last=Christgau|first=Robert|title=Consumer Guide Reviews|url=http://www.robertchristgau.com/get_artist.php?name=megadeth|work=[[The Village Voice]]|year=1987|access-date=December 6, 2013}}</ref> The album featured a cover version of the [[Sex Pistols]]' "[[Anarchy in the U.K.]]"; Mustaine changed the lyrics, later saying that he had simply heard them incorrectly. To support the album, Megadeth embarked on a [[So Far, So Good...So What! Tour|world tour]] that lasted for nearly eight months. The band (along with [[Savatage]]) opened for [[Dio (band)|Dio]] on their ''[[Dream Evil (album)|Dream Evil]]'' tour and supported [[Iron Maiden]] on their ''[[Seventh Son of a Seventh Son]]'' [[Seventh Tour of a Seventh Tour|tour]], both in the United States.{{sfn|Rees|Crampton|1999|p=546}} They also headlined a North American tour with [[Warlock (band)|Warlock]] and [[Sanctuary (band)|Sanctuary]] (whose debut album ''[[Refuge Denied]]'' was produced by Mustaine), and a European trek with [[Testament (band)|Testament]], [[Nuclear Assault]], [[Flotsam and Jetsam (band)|Flotsam and Jetsam]] and Sanctuary.<ref>{{Cite web|url=http://www.metallipromo.com/meg.html|title=Megadeth|website=metallipromo.com|access-date=December 27, 2019}}</ref>

In June 1988, Megadeth appeared in [[Penelope Spheeris]]' documentary ''[[The Decline of Western Civilization Part II: The Metal Years]]''.{{sfn|Bukszpan|2003|p=244}} The documentary chronicled the Los Angeles heavy metal scene of the late 1980s, and Spheeris, who had directed Megadeth in the video for "[[Wake Up Dead]]", decided to include them to feature a more serious band in contrast to the [[glam metal]] groups.{{sfn|Unterberger|Hicks|1999|p=416}}<ref>{{Cite AV media notes|title=Greatest Hits: Back to the Start|type=liner notes|year=2005|publisher=[[Capitol Records]]|page=2|last=Spheeris|first=Penelope}}</ref> Mustaine remembered the film as a disappointment, as it aligned Megadeth with "a bunch of shit bands".<ref>{{cite video|title=Megadeth: Rusted Pieces VHS|publisher=[[Capitol Records]]/[[EMI]]|date=January 1, 1991}}</ref>

In August, the band appeared at the [[Monsters of Rock]] festival at [[Castle Donington]] in the United Kingdom, performing to an audience of more than 100,000. One show featured a guest appearance by Metallica drummer (and Mustaine's former bandmate) Lars Ulrich. The band was added to the Monsters of Rock European tour, but left after the first show due to Ellefson's drug problems, for which he was treated immediately.{{sfn|Ellefson|McIver|2013|p=72}} Megadeth was replaced by Testament.<ref>{{Cite news|url=http://www.blabbermouth.net/news/ex-megadeth-guitarist-jeff-young-responds-to-dave-mustaine-s-drug-allegations/|title=Ex-MEGADETH Guitarist JEFF YOUNG Responds To DAVE MUSTAINE's Drug Allegations|date=December 20, 2009|work=BLABBERMOUTH.NET|access-date=December 27, 2019|language=en-US}}</ref>

Shortly after the Monsters of Rock appearance, Mustaine fired Behler and Young and canceled Megadeth's Australian tour. "On the road, things escalated from a small border skirmish into a full-on raging war," Mustaine later recalled. "I think a lot of us were inconsistent because of [drugs]."<ref>{{cite web|last=Niles|first=Eric|title=Rust in Peace|url=http://megadeth.rockmetal.art.pl/interviews_musicconnection1990.html|work=[[Music Connection]]|publisher=Rockmetal.art.pl|date=September 1990|access-date=December 8, 2013|archive-date=July 23, 2009|archive-url=https://web.archive.org/web/20090723233916/http://megadeth.rockmetal.art.pl/interviews_musicconnection1990.html|url-status=dead}}</ref> During the tour, Mustaine noticed problems developing with Behler and brought in drummer [[Nick Menza]] as Behler's [[Road crew|drum technician]]. As with Samuelson, Menza was expected to take over if Behler could not continue the tour. Menza replaced Behler in 1989.{{sfn|Kajzer|Lotring|2010|p=192}} Young's dismissal resulted from Mustaine's suspicions that he was having an affair with Mustaine's then-girlfriend, an allegation Young denied.<ref>{{cite web|last=Dome |first=Malcolm |title=Megadeth Bitching: Mustaine And Young At War! |url=http://www.classicrockmagazine.com/news/megadeth-bitching-mustaine-and-young-at-war/ |work=[[Classic Rock (magazine)|Classic Rock]] |date=December 21, 2009 |access-date=December 8, 2013 |url-status=dead |archive-url=https://web.archive.org/web/20131211012459/http://www.classicrockmagazine.com/news/megadeth-bitching-mustaine-and-young-at-war/ |archive-date=December 11, 2013 }}</ref>

The band was unable to quickly find a suitable replacement for Young. Although 1989 marked the first time since its inception that Megadeth did not tour nor perform at least one show, they recorded a cover version of Alice Cooper's "[[No More Mr. Nice Guy (song)|No More Mr. Nice Guy]]" which appeared on the soundtrack to the [[Wes Craven]] horror movie ''[[Shocker (film)|Shocker]]''.{{sfn|Buckley|2003|p=660}} The video was directed by [[Penelope Spheeris]], who recalled the filming as a "Herculean task" as Mustaine was unable to play guitar because of his drug addiction.{{sfn|Bukszpan|2003|p=244}} During the March 1989 auditions for a new lead guitarist, Mustaine was arrested for [[driving under the influence]] and possession of narcotics after crashing into a parked vehicle occupied by an off-duty police officer.{{sfn|Janosik|2006|p=97}} Mustaine entered court-ordered [[drug rehabilitation]] shortly afterwards, and became drug-free for the first time in ten years.{{sfn|Bukszpan|2003|p=244}}

===1990–1991: ''Rust in Peace''===
With Mustaine sober, Megadeth continued searching for a new lead guitarist. [[Guns N' Roses]] guitarist [[Slash (musician)|Slash]] had been jamming with Mustaine and Ellefson, and although it seemed that he might join Megadeth, he remained with Guns N' Roses.{{sfn|Ellefson|McIver|2013|p=79}} [[Dimebag Darrell]] of [[Pantera]] was offered the job, but the deal fell through after Mustaine refused his request to recruit his brother, Pantera drummer [[Vinnie Paul]], as he had already hired Menza.<ref name="King">{{cite web|title=Dave Mustaine: Kerry King Hates My Guts|url=http://www.ultimate-guitar.com/news/interviews/dave_mustaine_kerry_king_hates_my_guts.html|work=[[Blabbermouth.net]]|publisher=[[Ultimate-Guitar.com]]|date=August 16, 2013|access-date=November 18, 2013}}</ref> The offer was also extended to [[Criss Oliva]] who also declined as he did not want to leave [[Savatage]].<ref>{{cite web|title=A Look Back at Savatage's Criss Oliva|url=https://allthatshreds.com/look-back-savatages-criss-oliva/|work=All That Shreds Magazine|date=April 8, 2017|access-date=December 31, 2018|archive-date=October 19, 2021|archive-url=https://web.archive.org/web/20211019024251/https://allthatshreds.com/look-back-savatages-criss-oliva/|url-status=dead}}</ref> [[Jeff Loomis]], who would later go on to form progressive metal titans [[Nevermore]], also auditioned though Mustaine deemed him too young to join as Loomis was only 18 at the time.<ref>{{cite web|title=Guitarist Jeff Loomis - "If I Would Have Joined MEGADETH I Really Wouldn't Had The Open Writing That I'm Able To Do In NEVERMORE"|url=http://bravewords.com/news/guitarist-jeff-loomis-if-i-would-have-joined-megadeth-i-really-wouldnt-had-the-open-writing-that-im-able-to-do-in-nevermore|work=[[BraveWords]]|date=July 3, 2010|access-date=February 14, 2025|archive-date=July 30, 2021|archive-url=https://web.archive.org/web/20210730123351/https://bravewords.com/news/guitarist-jeff-loomis-if-i-would-have-joined-megadeth-i-really-wouldnt-had-the-open-writing-that-im-able-to-do-in-nevermore|url-status=dead}}</ref>

[[File:Megadeth1991AL.jpg|thumb|Megadeth performing at the [[Sloss Furnaces]] in [[Birmingham, Alabama]], in July 1991]]
[[Marty Friedman]] filled the guitarist position at the recommendation of Ron Laffitte, a member of Capitol management. Laffitte had heard ''[[Dragon's Kiss]]'', a solo recording by Friedman when he was in [[Cacophony (band)|Cacophony]].<ref name="Decibel"/> Mustaine and Ellefson were satisfied with Friedman's style and thought that he understood Megadeth's music.{{sfn|Ellefson|McIver|2013|p=88}} With Friedman in the group, the band completed what fans consider the definitive Megadeth lineup.{{sfn|Kajzer|Lotring|2010|p=320}} The revitalized band entered the studio at [[Rumbo Recorders]] in March 1990 with co-producer [[Mike Clink]] to begin Megadeth's most critically acclaimed album, ''[[Rust in Peace]]''. Clink was the first producer to complete a Megadeth album without being fired.<ref name="Rust"/> Its recording was documented in ''[[Rusted Pieces]]'', a home video released in 1991 with six music videos and an interview with the band.{{sfn|Rubiner|1993|p=167}}

Released in September 1990, ''Rust in Peace'' debuted at number 23 in the United States and number eight in the United Kingdom.<ref name="Albums"/><ref>{{cite web|url=https://www.officialcharts.com/artists/|title=The Official Charts Company&nbsp;– Megadeth|work=[[Official Charts Company]]|access-date=February 24, 2013}}</ref> Mustaine had developed a writing style with a rhythmically complex, progressive edge, and the songs featured longer guitar solos and frequent tempo changes.{{sfn|Pillsbury|2006|p=82}} Described as a genre-defining work by ''[[Decibel (magazine)|Decibel]]'',<ref name="Decibel">{{cite web|title=Megadeth "Rust in Peace"|work=[[Decibel (magazine)|Decibel]]|url=http://www.decibelmagazine.com/hall-of-fame/megadeth/|access-date=December 8, 2013}}</ref> the album solidified Megadeth's reputation in the music industry.{{sfn|Prown|Newquist|1997|p=227}} It features the singles "[[Holy Wars... The Punishment Due]]" and "[[Hangar 18 (song)|Hangar 18]]", both of which were accompanied by music videos and became live staples. ''Rust in Peace'' received a Grammy nomination in 1991 for [[Grammy Award for Best Metal Performance|Best Metal Performance]],<ref name=":0" /><ref>{{cite news|title=Megadeth: First Look At 'Rust In Peace Live' DVD|url=http://www.blabbermouth.net/news/megadeth-first-look-at-rust-in-peace-live-dvd/|work=[[Blabbermouth.net]]|date=August 23, 2010|access-date=December 8, 2013}}</ref> and was the group's third platinum album, certified in December 1994.<ref>{{cite magazine|last=Morris|first=Chris|title=Ace Of Base, 'Lion King' Lead Record Certs|magazine=[[Billboard (magazine)|Billboard]]|date=January 14, 1995|page=76|url=https://books.google.com/books?id=tQsEAAAAMBAJ&q=1995+rust+in+peace+billboard&pg=PA76|access-date=December 8, 2013}}</ref>

Early in 1990, Megadeth joined [[Slayer]], [[Testament (band)|Testament]] and [[Suicidal Tendencies]] for the successful European [[Clash of the Titans (tour)|Clash of the Titans]] tour, featuring several American thrash metal bands.{{sfn|McIver|2008|loc=Chapter 13}} An American leg began the following year featuring Megadeth, Slayer and [[Anthrax (American band)|Anthrax]], with [[Alice in Chains]] as a supporting act. The tour was considered a multi-headliner, as the three main bands alternated time slots.{{sfn|Harrison|2011|p=60}} In addition to the [[Clash of the Titans (tour)|Clash of the Titans]] tour, Megadeth (along with Testament) supported [[Judas Priest]] on their ''[[Painkiller (Judas Priest album)|Painkiller]]'' [[Painkiller Tour|tour]] in North America late in 1990 and appeared at the second [[Rock in Rio]] festival in January 1991.{{sfn|Ellefson|McIver|2013|p=101}} In July 1991 the song "Go to Hell" was featured in the film ''[[Bill & Ted's Bogus Journey]]'' and on its soundtrack.<ref>{{cite web |title=Bill & Ted's Bogus Journey: Official Motion Picture Soundtrack |url=https://www.allmusic.com/album/bill-teds-bogus-journey-soundtrack-mw0000675194 |website=Allmusic}}</ref>

===1992–1993: ''Countdown to Extinction''===
The music for Megadeth's fifth studio album was written in two different sessions. The first session occurred after the conclusion of the [[Clash of the Titans (tour)|Clash of the Titans]] tour, while the second session happened in the fall of 1991 following a one-month break.<ref name="WordPress">{{cite web|url=http://warrmageddoninc.wordpress.com/2013/03/27/archive-interview-with-dave-ellefson-of-megadeth/|title=Archive: Interview with Dave Ellefson of Megadeth|first=Johnny|last=Ringo|date=March 27, 2013|work=Hails & Horns|publisher=[[Word Press]]|access-date=October 19, 2013|archive-date=October 24, 2013|archive-url=https://web.archive.org/web/20131024052548/http://warrmageddoninc.wordpress.com/2013/03/27/archive-interview-with-dave-ellefson-of-megadeth/|url-status=live}}</ref> Recording sessions for the album began in January 1992 at [[The Enterprise Studios|Enterprise Studios]] in [[Burbank, California]]. [[Max Norman]] was chosen to produce, as the band was pleased with his mixing of ''Rust in Peace''.<ref>{{cite book|title=Countdown to Extinction ''liner notes (Japanese edition)''|year=1992|publisher=[[Capitol Records]]|pages=3–5, 7–8, 10}}</ref> Megadeth spent nearly four months in the studio with Norman, writing and recording what became the band's most commercially successful album, ''[[Countdown to Extinction]]''.<ref>{{cite news|last=Herrmann|first=Brenda|title=Megadeth&nbsp;– Countdown to Extinction (Capitol)|url=https://www.chicagotribune.com/1992/07/30/megadethcountdown-to-extinction-capitol-starstarstarstarlike-metallica-megadeth/|access-date=December 8, 2013|newspaper=[[Chicago Tribune]]|date=July 30, 1992}}</ref> The album, whose title was suggested by Menza, features songwriting contributions from each band member.<ref>{{cite news|last=Prince|first=Patrick|title=Megadeth fully embraces "Countdown" anniversary|work=[[Goldmine (magazine)|Goldmine]]|url=http://www.goldminemag.com/article/megadeth-fully-embraces-countdown-anniversary|date=November 19, 2012|access-date=November 17, 2013}}</ref> Ellefson explained that the band changed its approach to songwriting for this album, beginning to write more melodic songs.{{sfn|Ellefson|McIver|2013|p=103}}
{{Listen
| filename    = Megadeth Symphony of Destruction.ogg
| title       = "Symphony of Destruction"
| description = ''Countdown to Extinction''{{'}}s first single, "[[Symphony of Destruction]]", has become one of Megadeth's best-known songs with its concise structure and memorable [[hook (music)|hooks]].{{sfn|Popoff|2002|p=108}}
| pos         = right
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Released in July 1992, ''Countdown to Extinction'' entered the [[Billboard 200|''Billboard'' 200]] chart at number two and was certified double platinum in the United States.<ref name="Allmusic Bio"/>{{certification cite ref|region=United States|artist=Megadeth|type=album|refname=RIAA|access-date=March 19, 2019}}{{sfn|Joyner|2002|p=301}} It received a nomination for Best Metal Performance at the [[35th Annual Grammy Awards|1993 Grammy Awards]],<ref>{{cite news|url=https://archive.seattletimes.com/archive/19930108/1678846/grammys-show-influence-of-seattle-music|title=Grammys show influence of Seattle music|last=MacDonald|first=Patrick|date=January 8, 1993|work=[[The Seattle Times]]|access-date=December 17, 2009|archive-date=June 14, 2017|archive-url=https://web.archive.org/web/20170614185516/http://community.seattletimes.nwsource.com/archive/?date=19930108&slug=1678846|url-status=live}}</ref> and its title track won a [[Genesis Award]] from the [[Humane Society of the United States|Humane Society]] in 1993 for raising awareness for animal rights issues.<ref>{{cite web|last=Grow|first=Kory|title=Megadeth&nbsp;– Countdown To Extinction 20th Anniversary Edition Cover Art Shown In New York's Times Square|work=[[Brave Words & Bloody Knuckles]]|url=http://www.bravewords.com/news/190162|date=September 13, 2012|access-date=November 17, 2013|archive-date=February 28, 2014|archive-url=https://web.archive.org/web/20140228223605/http://www.bravewords.com/news/190162|url-status=dead}}</ref> Ellefson later said that he and Friedman were disappointed that Megadeth did not win the Grammy: "It was such a bizarre moment, because it was as if the amount of work it had taken to ramp up to that hopeful night was literally gone in a second."{{sfn|Ellefson|McIver|2013|p=106}}

A world tour in support of the album was launched in late 1992, with [[Pantera]] and [[White Zombie (band)|White Zombie]] as supporting acts.{{sfn|Ellefson|McIver|2013|p=106}} The tour included a North American leg in early 1993, with [[Stone Temple Pilots]] as the opening act. One month into the leg, the remaining shows, including dates in Japan, were canceled when Mustaine returned to substance abuse, ending up in a hospital emergency room.<ref>{{cite web|last=Chirazi|first=Steffan|title=Trial by Fire|url=http://megadeth.rockmetal.art.pl/interviews_rip1993.html|work=RIP|publisher=Rockmetal.art.pl|date=October 1993|access-date=December 8, 2013|archive-date=February 14, 2012|archive-url=https://web.archive.org/web/20120214232455/http://megadeth.rockmetal.art.pl/interviews_rip1993.html|url-status=dead}}</ref> After seven weeks in rehab, Mustaine emerged sober again and the band returned to the studio to record "[[Angry Again]]". The song is featured on the [[Last Action Hero (soundtrack)|soundtrack]] of the 1993 film ''[[Last Action Hero]]'' and received a Grammy nomination in 1994.<ref>{{cite web|first=Carlos|last=Ramirez|title=10 Most Underrated Megadeth Songs|url=http://noisecreep.com/most-underrated-megadeth-songs/|website=[[Noisecreep]]|date=September 13, 2013 |access-date=November 24, 2013}}</ref>

During mid-1993, Megadeth performed at a number of shows with Metallica in Europe. The first was at [[National Bowl|Milton Keynes Bowl]] in England, and included [[Diamond Head (English band)|Diamond Head]].{{sfn|Ellefson|McIver|2013|p=106}} In July, Megadeth was added as the opening act for [[Aerosmith]]'s [[Get a Grip Tour]], but was removed from the bill after three shows.<ref>{{cite web|last=Hartmann|first=Graham|title=Megadeth's David Ellefson Plays 'Wikipedia: Fact or Fiction?'|url=http://loudwire.com/megadeth-david-ellefson-wikipedia-fact-or-fiction/|work=[[Loudwire]]|date=April 2, 2014|access-date=May 25, 2014}}</ref> Aerosmith said that Megadeth was "dumped" because of Mustaine's erratic behavior, while Capitol Records said it was due to "artistic restrictions".<ref>{{cite journal|author=''Spin'' staff|title=Clash of the Quasi-Titans|journal=[[Spin (magazine)|Spin]]|date=October 1993|volume=9|page=36|url=https://books.google.com/books?id=fsi_VCMy0tQC&q=megadeth+aerosmith+tour&pg=PA36|access-date=November 18, 2013}}</ref> After the canceled US tour, Megadeth returned to the studio to record "[[99 Ways to Die (song)|99 Ways to Die]]", which appeared on ''[[The Beavis and Butt-Head Experience]]'', a compilation album released in November featuring songs interspersed with commentary by the main characters of the animated series ''[[Beavis and Butt-Head]]''. The song was nominated for Best Metal Performance at the [[37th Annual Grammy Awards|1995 Grammy Awards]].<ref>{{cite web|last=Harris|first=Chris|title=The Grammys Don't Understand Metal|url=http://noisecreep.com/the-grammys-dont-understand-metal/|website=[[Noisecreep]]|date=January 29, 2010|access-date=December 8, 2013}}</ref> During these sessions, Megadeth recorded a cover version of [[Black Sabbath]]'s "[[Paranoid (Black Sabbath song)|Paranoid]]", which appeared on the Black Sabbath tribute album ''[[Nativity in Black]]''; it was nominated for a Grammy the following year.<ref>{{cite news|last=MacDonald|first=Patrick|title=Presidents of the U.S. are riding high in the musical polls|url=https://archive.seattletimes.com/archive/19960105/2307442/presidents-of-the-us-are-riding-high-in-the-musical-polls|date=January 5, 1996|work=[[The Seattle Times]]|access-date=December 17, 2009|archive-date=September 26, 2012|archive-url=https://web.archive.org/web/20120926021748/http://community.seattletimes.nwsource.com/archive/?date=19960105&slug=2307442|url-status=live}}</ref>

===1994–1995: ''Youthanasia''===
In early 1994, Megadeth reunited with producer Max Norman for the follow-up to ''Countdown to Extinction''. With three band members living in [[Arizona]], initial work began at Phase Four Studios in [[Phoenix, Arizona|Phoenix]].{{sfn|Larkin|1995|p=2777}} A few days into pre-production, problems with Phase Four's equipment forced the band to look for another studio. Mustaine insisted on recording in Arizona, but no suitable recording facility could be found. At Norman's request, the band built its own recording studio in Phoenix in a rented warehouse, later called "Fat Planet in Hangar 18".<ref>{{cite book|title=Youthanasia ''liner notes (2004 reissue)''|year=2004|publisher=[[Capitol Records]]|pages=2, 24–25}}</ref> During the studio's construction, much of the pre-production songwriting and arrangements were done at Vintage Recorders in Phoenix.{{sfn|Rees|Crampton|1999|p=658}} At Norman's suggestion, the tracks on ''Youthanasia'' had a slower tempo than previous albums, at about 120 [[beats per minute]].{{sfn|Ellefson|McIver|2013|p=118}} The band abandoned the progressive approach from its previous albums and focused on stronger vocal melodies and more accessible, radio-friendly arrangements.<ref>{{cite web|last=Erlewine|first=Stephen Thomas|title=Megadeth: Youthanasia|url=https://www.allmusic.com/album/youthanasia-mw0000119424|website=[[AllMusic]]|access-date=December 8, 2013}}</ref> For the first time, Megadeth wrote and arranged the entire album in the studio, including basic tracks recorded live by the entire band. The album's recording was video recorded and released as ''Evolver: The Making of Youthanasia'' in 1995.

On October 1, 1994, as part of the album's promotional efforts, the band launched Megadeth, Arizona, which is considered the very first official artist website ever.<ref name="websiteAS">{{Cite web |last=Edwards |first=Clayton |date=October 1, 2025 |title=On This Day in 1994, "Megadeth, Arizona" Becomes the First-Ever Official Artist Website |url=https://americansongwriter.com/on-this-day-in-1994-megadeth-arizona-becomes-the-first-ever-official-artist-website/ |url-status=live |archive-url=http://web.archive.org/web/20251001171435/https://americansongwriter.com/on-this-day-in-1994-megadeth-arizona-becomes-the-first-ever-official-artist-website/ |archive-date=October 1, 2025 |access-date=October 12, 2025 |website=[[American Songwriter]] |language=en-US}}</ref><ref name="websiteB">{{Cite magazine |last=Knopper |first=Steve |date=October 31, 2024 |title=How Megadeth Pioneered the First Artist Website 30 Years Ago This Month |url=https://www.billboard.com/pro/megadeth-created-first-artist-website-30-years-ago-how-it-happened/ |url-status=live |archive-url=http://web.archive.org/web/20241107020207/https://www.billboard.com/pro/megadeth-created-first-artist-website-30-years-ago-how-it-happened/ |archive-date=November 7, 2024 |access-date=October 12, 2025 |magazine=[[Billboard (magazine)|Billboard]] |language=en-US}}</ref> It was conceived by Capitol's sales director [[Robin Bechtel]] with help from designer [[Wendy Dougan]] and copywriter [[Jane Bogart]] on a total budget of $30,000 granted by Capitol.<ref name="websiteAS" /><ref name="websiteB"/> Megadeth, Arizona was conceived as "a virtual cybertown in cyberspace". It featured a [[chat room]] (Megadiner<ref name="websiteB"/>), news about the band (''Horrorscopes''<ref name="websiteB"/>), digital postcards and other types of content.<ref name="websiteAS" /><ref name="websiteB"/>

After eight months of studio work, ''[[Youthanasia]]'' was released in November 1994. It debuted at number four on the ''Billboard'' 200 and charted in several European countries.<ref>{{cite magazine|title=Billboard 200|magazine=[[Billboard (magazine)|Billboard]]|date=November 19, 1994|page=[https://archive.org/details/bub_gb_ZggEAAAAMBAJ/page/n87 88]|url=https://archive.org/details/bub_gb_ZggEAAAAMBAJ|quote=youthanasia.|access-date=December 9, 2013|publisher=Nielsen Business Media}}</ref> The album was certified gold in Canada the day it was released,<ref>{{cite web|url=http://www.musiccanada.com/GPSearchResult.aspx?st=Youthanasia&sa=Megadeth&smt=0|title=Canadian album certifications&nbsp;– Megadeth&nbsp;– Youthanasia|publisher=[[Music Canada]]|access-date=December 9, 2013|url-status=dead|archive-url=https://web.archive.org/web/20131212164322/http://www.musiccanada.com/GPSearchResult.aspx?st=Youthanasia&sa=Megadeth&smt=0|archive-date=December 12, 2013}}</ref> and was certified platinum in the US two months later.<ref name="RIAA"/> Megadeth hired fashion photographer [[Richard Avedon]] to enhance the band's image. Avedon had the band members exchange their jeans and T-shirts for a more conscious appearance.<ref>{{cite web|first=P.J.|last=Merkle|title=Megadeth: Bewitched, Bothered and Bewildered|url=http://megadeth.rockmetal.art.pl/interviews_hitparader1995.html|date=May 1995|work=[[Hit Parader]]|publisher=Rockmetal.art.pl|access-date=September 16, 2013|archive-date=July 24, 2009|archive-url=https://web.archive.org/web/20090724011730/http://megadeth.rockmetal.art.pl/interviews_hitparader1995.html|url-status=dead}}</ref> To promote ''Youthanasia'', the band played a Halloween show in [[New York City]] called "Night of the Living Megadeth", which was broadcast live on MTV.{{sfn|Ellefson|McIver|2013|p=118}} In November, the band performed twice on the ''[[Late Show with David Letterman]]'', playing "[[Train of Consequences]]" on the first appearance and "[[A Tout le Monde]]" on the second.<ref>{{cite web|title=Late Show With David Letterman: Episode Guide|url=http://tv.msn.com/tv/series-episodes/late-show-with-david-letterman/?sb=2&si=326&ipp=15|publisher=[[MSN Entertainment]]|date=November 18, 1994|access-date=July 17, 2014|archive-url=https://web.archive.org/web/20140727025435/http://tv.msn.com/tv/series-episodes/late-show-with-david-letterman/?sb=2&si=326&ipp=15|archive-date=July 27, 2014|url-status=dead}}</ref><ref>{{cite web|last=Menza|first=Nick|title=When Megadeth Needed a Drummer|url=http://menzajamz.com/site/nm/bio.html|publisher=Nick Menza's Official Website|access-date=July 18, 2014|url-status=dead|archive-url=https://web.archive.org/web/20140727101440/http://menzajamz.com/site/nm/bio.html|archive-date=July 27, 2014}}</ref>

An eleven-month tour began in South America in November 1994. In 1995, Megadeth played in Europe and North America with several opening acts, including [[Corrosion of Conformity]], [[Korn]] and [[Fear Factory]].<ref>{{cite web|title=The Killing Road&nbsp;– A History Of Megadeth's Opening Acts|url=http://www.roadrunnerrecords.com/news/exclusive-the-killing-road-a-history-of-megadeth-s-opening-acts|publisher=[[Roadrunner Records]]|date=February 2, 2012|access-date=December 9, 2013}}</ref> The tour culminated with an appearance at the Monsters of Rock festival in Brazil, co-headlining with Alice Cooper and [[Ozzy Osbourne]].<ref name="Timeline">{{cite web|title=History|url=http://www.megadeth.com/history|publisher=Megadeth.com|access-date=December 9, 2013|archive-url=https://web.archive.org/web/20130906102158/http://www.megadeth.com/history|archive-date=September 6, 2013|url-status=dead}}</ref> In January 1995, Megadeth appeared on the soundtrack of the horror movie ''[[Demon Knight]]'' with the song "Diadems".<ref>{{cite web|last=Henderson|first=Alex|title=Tales from the Crypt: Demon Knight (Original Soundtrack)|url=https://www.allmusic.com/album/tales-from-the-crypt-demon-knight-original-soundtrack-mw0000627023|website=[[AllMusic]]|access-date=December 9, 2013}}</ref> In July, Megadeth released ''[[Hidden Treasures (EP)|Hidden Treasures]]'', an [[extended play]] featuring songs which originally appeared on movie soundtracks and tribute albums.<ref>{{cite news|last=Golemis|first=Dean|date=November 9, 1995|url=https://www.chicagotribune.com/1995/11/09/megadethhidden-treasures-capitol-star-12this-campy-collection/|title=Megadeth: Hidden Treasures (Capitol)|newspaper=[[Chicago Tribune]]|access-date=December 11, 2013}}</ref>

=== 1996–1999: ''Cryptic Writings'' and ''Risk'' ===
After completing the extensive world tour in support of ''Youthanasia'', Megadeth took time off in most of 1996 and nearly broke up.<ref name="MD.45">{{cite web |title=Watch: MEGADETH Joined By FEAR's LEE VING For Performance Of 'Nothing Is Something' From MD.45 |url=https://blabbermouth.net/news/watch-megadeth-joined-by-fears-lee-ving-for-performance-of-nothing-is-something-from-md-45 |website=[[Blabbermouth]] |access-date=August 3, 2023 |date=June 25, 2023 |quote=Two decades ago, Mustaine told Classic Rock magazine that "a lot of" the music on "The Craving" "was intended for MEGADETH, but every time I turned around, Marty [Friedman, then-MEGADETH guitarist] had a solo record coming out; Nick [Menza, then-MEGADETH drummer] had his own solo project. Y'know, was this MEGADETH or not? I said, 'You don't see me going off to play with anybody else. If I'm not doing it, then none of you guys are. And if I do it, then we all can — but I might not come back.' By the time I got into the studio with Lee, I figured it was a case of goodbye. But we got back together after a little period of time."}}</ref> During this period, Mustaine began work on [[MD.45]], a side project with vocalist [[Lee Ving]] of [[Fear (band)|Fear]]. The majority of the songs on the album were intended for Megadeth, but due to the band almost disbanding, Mustaine decided to use them for MD.45 instead.<ref name="MD.45" /> The duo hired drummer [[Jimmy DeGrasso]], who had played with Alice Cooper on the South American Monsters of Rock tour earlier that year.<ref>{{cite web|last=Prato|first=Greg|title=MD.45&nbsp;– Biography|url=https://www.allmusic.com/artist/md45-mn0000219971|website=[[AllMusic]]|access-date=December 10, 2013}}</ref> Marty Friedman built a studio in his new home in Phoenix and completed his fourth solo album, released in April 1996.<ref name="Wiederhorn"/>

In September 1996, Megadeth went to London to work on songs for the next album. The songwriting was closely supervised by new manager Bud Prager, who contributed musical ideas and lyrics; many lyrics and song titles were changed at his request.{{sfn|Ellefson|McIver|2013|p=129}} Regarding Prager's influence, Mustaine later wrote: "I figured maybe this guy [Prager] could help me get that intangible number one record I so badly wanted."<ref>{{cite book|title=Cryptic Writings ''liner notes (2004 reissue)''|year=2004|publisher=[[Capitol Records]]|pages=2–3}}</ref> The album, recorded in [[Nashville, Tennessee|Nashville]], was Megadeth's first collaboration with [[country pop]] producer [[Dann Huff]], who had met Mustaine in 1990.{{sfn|Mustaine|2011|p=275}}

''[[Cryptic Writings]]'' was released in June 1997. The album peaked at number ten on the ''Billboard'' 200,<ref name="Albums"/> and was eventually certified gold in the United States. Its lead single, "[[Trust (Megadeth song)|Trust]]", became Megadeth's highest charting song on the [[Mainstream Rock (chart)|Mainstream Rock Tracks]] at number five,<ref>{{cite magazine|title=Megadeth&nbsp;– Chart History (Songs)&nbsp;– second page|url=https://www.billboard.com/artist/310366/megadeth/chart?page=1&f=376|magazine=[[Billboard (magazine)|Billboard]]|access-date=December 10, 2013}}</ref> and was nominated for Best Metal Performance at the [[40th Annual Grammy Awards|1998 Grammy Awards]].<ref>{{cite magazine|author=''Billboard'' staff|title=40th Annual Grammy Awards: Final Nominations|magazine=[[Billboard (magazine)|Billboard]]|date=January 17, 1998|page=78|url=https://books.google.com/books?id=rg0EAAAAMBAJ&q=trust+megadeth+best+metal+performance&pg=RA1-PA78|access-date=December 10, 2013}}</ref> Although all four singles from the album entered the top 20 on ''Billboard''{{'}}s Mainstream Rock Tracks chart,<ref>{{cite web|title=Cryptic Writings&nbsp;– Megadeth&nbsp;– Charts|url=https://www.allmusic.com/album/cryptic-writings-mw0000023863/awards|website=[[AllMusic]]|access-date=December 10, 2013}}</ref> press response to the album was mixed. The album featured a diverse set of songs which the ''[[Los Angeles Times]]'' described as a "rousing balance" between older material and experimental songs.<ref>{{cite news|last=Masuo|first=Sandy|date=June 29, 1997|url=https://www.latimes.com/archives/la-xpm-1997-06-29-ca-7946-story.html|title=In Brief: Megadeth, "Cryptic Writing," Capitol.|newspaper=[[Los Angeles Times]]|access-date=December 10, 2013}}</ref> Asked about the album's eclecticism, Mustaine said that ''Cryptic Writings'' was divided into thirds. One part was based around faster, more aggressive material, another was "radio-orientated music like ''Youthanasia''", and the final third was more melodic.<ref name="Wiederhorn">{{cite web|last=Wiederhorn|first=Jon|title=Last Men Standing|url=http://megadeth.rockmetal.art.pl/interviews_guitarworld1998.html|work=[[Guitar World]]|publisher=Rockmetal.art.pl|date=June 1998|access-date=December 10, 2013|archive-date=February 14, 2012|archive-url=https://web.archive.org/web/20120214231953/http://megadeth.rockmetal.art.pl/interviews_guitarworld1998.html|url-status=dead}}</ref>

After more than a year since the band's last concert, Megadeth returned as a live act in June 1997, beginning a world tour with the [[Misfits (band)|Misfits]] and touring in the United States with [[Life of Agony]] and [[Coal Chamber]].<ref name="Timeline"/> In July, the band participated in [[Ozzfest]] '98 but, halfway through the tour, Menza reportedly discovered a tumor on his knee and left to undergo surgery.<ref>{{cite web|author=Metal Sludge staff |title=20 question with ex-Megadeth drummer Nick Menza |url=http://www.metalsludge.tv/?p=28655 |publisher=Metal Sludge |date=March 12, 2002 |access-date=November 15, 2013 |url-status=dead |archive-url=https://web.archive.org/web/20131111105113/http://www.metalsludge.tv/?p=28655 |archive-date=November 11, 2013 }}</ref> Jimmy DeGrasso, who had collaborated with Mustaine in MD.45, was hired to replace Menza for the remainder of the tour.<ref>{{cite web|title=Nick Menza: "I Was Fired From Megadeth Two Days After Surgery"|url=http://www.blabbermouth.net/news/nick-menza-i-was-fired-from-megadeth-two-days-after-surgery/|work=RockRage|publisher=[[Blabbermouth.net]]|date=February 19, 2002|access-date=December 10, 2013}}</ref> Though initially meant to be a temporary replacement, DeGrasso joined the band permanently after the tour. Mustaine later said that he dismissed Menza from the band because he believed the drummer had lied about having cancer.<ref name="King"/>

Following the band's mainstream radio success with ''Cryptic Writings'', Megadeth again worked with Dann Huff on its eighth studio album. The band began writing in January 1999, supervised by manager Bud Prager, who was credited with co-writing five of the album's twelve songs.<ref>{{cite book|title=Risk ''liner notes (2004 reissue)''|year=2004|publisher=[[Capitol Records]]|pages=2–5, 9, 11, 13, 15}}</ref> With high expectations following the chart success of "Trust", Prager convinced Mustaine to grant Huff even more control over the album's recording, a decision Mustaine later regretted.<ref>{{cite web|last=Hjelm|first=Fredrik|title=It Wasn't Fun Anymore|url=http://megadeth.rockmetal.art.pl/interviews_shockwaves2001.html|work=Shockwaves Online|publisher=Rockmetal.art.pl|year=2001|access-date=December 10, 2013}}</ref>

''[[Risk (Megadeth album)|Risk]]'', released in August 1999, was a critical and commercial failure and led to backlash from many longtime fans. Although its two predecessors incorporated rock elements alongside a more traditional heavy metal sound, ''Risk'' was virtually devoid of metal.<ref>{{cite web|last=Stagno|first=Mike|title=Megadeth: Risk|url=https://www.sputnikmusic.com/review/9218/Megadeth-Risk/|website=Sputnikmusic|date=September 19, 2006|access-date=December 11, 2013}}</ref><ref>{{cite web|last=Huey|first=Steve|title=Risk&nbsp;– Megadeth|url=https://www.allmusic.com/album/risk-mw0000244020|website=[[AllMusic]]|access-date=December 9, 2013}}</ref> About the band's musical direction, Dave Mustaine said: "We hit the nadir of our career with ''Risk'', and I vowed after that we were going to get back to our roots. It took a little bit of time to do that."<ref>{{cite web|last=Plenda|first=Melanie|title=Frontman Dave Mustaine talks about reviving thrash-metal sound, getting back into the studio, hitting the road|url=http://www.newhampshire.com/article/20130703/NEWHAMPSHIRE01/130709786/0/NEWHAMPSHIRE1405|publisher=[[NewHampshire.com]]|date=July 3, 2013|access-date=November 22, 2013|archive-url=https://web.archive.org/web/20131202224308/http://www.newhampshire.com/article/20130703/NEWHAMPSHIRE01/130709786/0/NEWHAMPSHIRE1405|archive-date=December 2, 2013|url-status=dead}}</ref> Despite this, ''Risk'' was certified gold in the United States.<ref>{{cite journal|last=Sciarretto|first=Amy|title=Loud Rock News|journal=[[CMJ New Music Report]]|date=January 31, 2000|volume=61|page=35|url=https://books.google.com/books?id=86qdz9zBkJYC&q=megadeth+risk+certified+gold&pg=PA35|access-date=March 28, 2014}}</ref>{{Failed verification|date=October 2024}} The album's lead single, "[[Crush 'Em]]", appeared on the soundtrack for ''[[Universal Soldier: The Return]]'' and was used as an entrance theme for [[NHL]] hockey games and professional wrestling events.<ref>{{cite web|title=Megadeth's Mustaine Raring To "Crush 'Em"|url=http://www.mtv.com/news/1432012/megadeths-mustaine-raring-to-crush-em/|archive-url=https://web.archive.org/web/20140519235910/http://www.mtv.com/news/1432012/megadeths-mustaine-raring-to-crush-em/|url-status=dead|archive-date=May 19, 2014|publisher=[[MTV]]|date=June 23, 1999|access-date=December 11, 2013}}</ref>

[[File:Marty Friedman - 01.jpg|thumb|right|Guitarist [[Marty Friedman]] left Megadeth at the end of 1999, citing "musical differences".]]
On July 14, 1999, former drummer Gar Samuelson died of [[liver failure]] at age 41 in [[Orange City, Florida]].<ref>{{cite web|author=MTV News staff|title=Original Megadeth Drummer Samuelson Dead At 41|url=http://www.mtv.com/news/1432009/original-megadeth-drummer-samuelson-dead-at-41/|archive-url=https://web.archive.org/web/20140725185248/http://www.mtv.com/news/1432009/original-megadeth-drummer-samuelson-dead-at-41/|url-status=dead|archive-date=July 25, 2014|publisher=[[MTV]]|date=July 23, 1999|access-date=July 16, 2014}}</ref> Eleven days later, during Megadeth's performance at [[Woodstock 1999]], Mustaine dedicated "Peace Sells" to Samuelson's memory. That month, Megadeth also recorded a cover version of the Black Sabbath's "[[Never Say Die (Black Sabbath song)|Never Say Die]]" for the second Nativity in Black tribute album.{{sfn|Rosen|2011|p=92}} The band began a world tour in support of ''Risk'' in September, playing with Iron Maiden during the European leg. Three months into the tour, Friedman announced his resignation from Megadeth, citing musical differences.<ref>{{cite web|last=Saidman|first=Sorelle|title=Megadeth Guitarist Marty Friedman Leaves Band|url=http://www.mtv.com/news/1431999/megadeth-guitarist-marty-friedman-leaves-band/|archive-url=https://web.archive.org/web/20140519234404/http://www.mtv.com/news/1431999/megadeth-guitarist-marty-friedman-leaves-band/|url-status=dead|archive-date=May 19, 2014|publisher=[[MTV]]|date=January 10, 2000|access-date=December 12, 2013}}</ref> Mustaine later said: "I told [Marty] after ''Risk'' that we had to go back to our roots and play metal, and he quit."<ref>{{cite magazine|first=Greg|last=Prato|title=Megadeth's Dave Mustaine Talks New Riffs, Old Drama|url=https://www.rollingstone.com/music/news/megadeths-dave-mustaine-talks-new-riffs-old-drama-20090729|magazine=[[Rolling Stone]]|date=July 29, 2009|access-date=December 15, 2013}}</ref>

===2000–2002: ''The World Needs a Hero'', breakup, and hiatus===
In January 2000, guitarist [[Al Pitrelli]], formerly of [[Savatage]] and the [[Trans-Siberian Orchestra]], became Friedman's replacement.<ref>{{cite magazine|last=Newman|first=Melinda|title=The Beat|magazine=[[Billboard (magazine)|Billboard]]|date=January 22, 2000|page=18|url=https://books.google.com/books?id=sA0EAAAAMBAJ&q=marty+friedman+leaves+megadeth&pg=PA18|access-date=December 12, 2012}}</ref> Megadeth returned to the studio in April to work on its ninth studio album. A month into production, the band received an offer to join the Maximum Rock tour with Anthrax and [[Mötley Crüe]]. Megadeth put the recording on hold and toured North America during the second quarter of 2000.<ref name="Timeline"/> Early in the tour, Anthrax was removed from the bill, allowing Megadeth to play an extended co-headlining set.<ref name="Metal Sludge"/> The tour, however, suffered from poor ticket sales.{{sfn|Ellefson|McIver|2013|p=136}}

After 15 years with Capitol Records, Megadeth left the label in July 2000. According to Mustaine, the departure was due to ongoing tensions with Capitol management.<ref name="Vegas Sun">{{cite news|last=Baird|first=Kirk|title=Acerbic Mustaine explains Megadeth's metal issues|url=http://www.lasvegassun.com/news/2001/sep/14/acerbic-mustaine-explains-megadeths-metal-issues/|access-date=December 7, 2013|newspaper=[[Las Vegas Sun]]|date=September 14, 2001}}</ref> Capitol returned the band's newest recordings and released a greatest hits album, ''[[Capitol Punishment: The Megadeth Years]]'', with two new tracks: "Kill the King" and "Dread and the Fugitive Mind".<ref>{{cite web|last=Huey|first=Steve|title=Capitol Punishment: The Megadeth Years|url=https://www.allmusic.com/album/capitol-punishment-the-megadeth-years-mw0000104229|website=[[AllMusic]]|access-date=December 5, 2013}}</ref> In November, Megadeth signed with [[Sanctuary Records]]. The band returned to the studio in October to finish its next album, ''[[The World Needs a Hero]]'', which was near completion when Megadeth joined the Maximum Rock tour six months earlier. Following the negative response to ''Risk'',<ref>{{cite web|last=Huey|first=Steve|title=Megadeth: The World Needs A Hero|url={{AllMusic|class=album|id=r532450|pure_url=yes}}|website=[[AllMusic]]|access-date=December 7, 2013}}</ref> Mustaine fired Bud Prager and produced the album himself.<ref>{{cite magazine|title=Megadeth Completes 'Hero'|url=https://www.billboard.com/articles/news/80726/megadeth-completes-hero|magazine=[[Billboard (magazine)|Billboard]]|date=January 22, 2001|access-date=December 7, 2013}}</ref> The songs were written by Mustaine alone, except for "Promises", which had contributions from Pitrelli.<ref name="The Tech">{{cite news|last=Chandrasekhar|first=Chaitra|title=Back to their Metallic Roots|work=[[The Tech (newspaper)|The Tech]]|date=May 15, 2001|volume=121|issue=26|url=http://tech.mit.edu/V121/N26/Megadeth.26a.html|access-date=December 7, 2013|archive-date=September 25, 2015|archive-url=https://web.archive.org/web/20150925080114/http://tech.mit.edu/V121/N26/Megadeth.26a.html|url-status=dead}}</ref> Two days before the release of ''The World Needs a Hero'', Megadeth appeared in an episode of [[VH1]]'s ''[[Behind the Music]]'' showcasing Mustaine, Ellefson, several past members, and Mustaine's old Metallica bandmates James Hetfield and Lars Ulrich.<ref name=VH1>{{cite magazine|title=Metal Returns: Megadeth, Halford, Slayer|url=https://www.billboard.com/articles/news/80495/metal-returns-megadeth-halford-slayer|magazine=[[Billboard (magazine)|Billboard]]|date=February 20, 2001|access-date=December 7, 2013}}</ref>

''The World Needs a Hero'' was released in May 2001 and debuted at number sixteen on the ''Billboard'' 200. It was banned in Malaysia when the national government determined that the album's artwork was "unsuitable for the nation's youth". Consequently, the band canceled its concert of August 2 in [[Kuala Lumpur]].<ref name=Ban>{{cite magazine|title=Fans To Choose Set Lists For U.S. Megadeth Trek|url=https://www.billboard.com/articles/news/78874/fans-to-choose-set-lists-for-us-megadeth-trek|magazine=[[Billboard (magazine)|Billboard]]|date=August 6, 2001|access-date=December 7, 2013}}</ref> The album marked Megadeth's return to a more aggressive sound after the stylistic variations of its previous two albums,<ref name="The Tech"/> but critics felt it fell short of expectations.<ref>{{cite book|editor1-first=Nathan|editor1-last=Brackett|editor2-first=Christian David|editor2-last=Hoard|title=[[The New Rolling Stone Album Guide]]|year=2004|publisher=[[Simon & Schuster]]|isbn=0-7432-0169-8|page=[https://archive.org/details/newrollingstonea00brac/page/534 534]}}</ref> Mustaine compared the album to a huge ship at sea, turning and trying to right itself to get back on course.<ref name="Vegas Sun"/> Its lead single, "Moto Psycho", reached number 22 on the Billboard Mainstream Rock chart.<ref name="Songs"/>

[[File:Megadeth Summer Breeze Open Air 2017 18.jpg|thumb|left|Mustaine dissolved Megadeth in 2002, following an arm injury that prevented him from playing guitar.]]
A European tour with [[AC/DC]] in support of ''The World Needs a Hero'' began in mid-2001, followed by an American tour with [[Iced Earth]] and [[Endo (band)|Endo]] in September.<ref name=VH1/> Mustaine allowed fans to choose the setlist in each American city.<ref name=Ban/> However, the tour was cut short following the [[September 11 attacks]]; all dates were canceled, including a DVD shoot in Argentina. The band instead played two shows in Arizona on November 16 and 17, which were filmed and released as Megadeth's first live release, ''[[Rude Awakening (Megadeth album)|Rude Awakening]]''.{{sfn|Ellefson|McIver|2013|p=139}} That year, ''Killing Is My Business... and Business Is Good!'' was remixed and remastered; the reissue featured modified artwork and several bonus tracks.{{sfn|Ellefson|McIver|2013|p=218}}

In January 2002, Mustaine was hospitalized for the removal of a [[kidney stone]] and was administered pain medication that triggered a relapse of his drug addiction. Following his stay, Mustaine checked himself into a treatment center in Texas. While there, Mustaine fell asleep with his left arm over the back of a chair, causing compression of the [[radial nerve]]. He was subsequently diagnosed with [[radial neuropathy]], which left him unable to grasp or make a fist with his left hand.<ref>{{cite web|last=Wiederhorn|first=Jon|title=Megadeth Pack It In After Nearly 20 Years|url=http://www.mtv.com/news/1453246/megadeth-pack-it-in-after-nearly-20-years/|archive-url=https://archive.today/20140519160532/http://www.mtv.com/news/1453246/megadeth-pack-it-in-after-nearly-20-years/|url-status=dead|archive-date=May 19, 2014|publisher=[[MTV]]|date=March 2, 2004|access-date=May 19, 2014}}</ref><ref>{{cite magazine|magazine=[[Billboard (magazine)|Billboard]]|title=Injury Forces Mustaine To Disband Megadeth|url=https://www.billboard.com/articles/news/76247/injury-forces-mustaine-to-disband-megadeth|date=April 3, 2002|access-date=November 25, 2013}}</ref>

On April 3, Mustaine announced in a press release that he was disbanding Megadeth, as his arm injury rendered him unable to play guitar.<ref>{{cite news|title=Megadeth to split up|url=http://news.bbc.co.uk/2/hi/entertainment/1910481.stm|work=[[BBC News]]|date=April 4, 2002|access-date=January 21, 2014}}</ref> For the next four months, he had physical therapy five days a week, and slowly began to "re-teach" his left hand.<ref>{{cite web|last=Epstein|first=Dan|title=Die Another Day|url=http://megadeth.rockmetal.art.pl/interviews_guitarworld2003.html|work=[[Guitar World]]|publisher=Rockmetal.art.pl|date=August 2003|access-date=November 25, 2013|archive-date=July 29, 2019|archive-url=https://web.archive.org/web/20190729174243/http://megadeth.rockmetal.art.pl/interviews_guitarworld2003.html|url-status=dead}}</ref> To fulfill contract obligations to Sanctuary, Megadeth released the compilation album ''[[Still Alive... and Well?]]''. The first half of the album contains live tracks recorded at the Web Theatre in Phoenix, and the second half has studio recordings from ''The World Needs a Hero''.<ref>{{cite web|last=Torreano|first=Bradley|title=Megadeth: Still, Alive...and Well?|url=https://www.allmusic.com/album/still-aliveand-well-mw0000223873|website=[[AllMusic]]|access-date=December 5, 2013}}</ref>

Following nearly a year of recovery, including [[physical therapy]],<ref>{{cite web|title=Dave Mustaine Talks About His Arm Injury|url=http://www.blabbermouth.net/news/dave-mustaine-talks-about-his-arm-injury/|publisher=[[Blabbermouth.net]]|date=January 16, 2004|access-date=December 19, 2024}}</ref> Mustaine began work on what was to have been his first solo album. The recording sessions for the new material, with session musicians [[Vinnie Colaiuta]] and [[Jimmie Lee Sloas]]{{Failed verification|date=December 2024}}, began in October 2003<ref>{{cite web |title=MEGADETH RECORDING IN NASHVILLE STUDIO?! |url=https://bravewords.com/news/megadeth-recording-in-nashville-studio |website=Brave Words |access-date=December 19, 2024 |date=October 23, 2003}}</ref> and were completed in April 2004.<ref>{{cite web |title=MEGADETH - NEW CD TRACKLISTING REVEALED |url=https://bravewords.com/news/megadeth-new-cd-tracklisting-revealed |website=Brave Words |access-date=December 19, 2024 |date=April 9, 2004}}</ref> The project was put on hold when Mustaine agreed to remix and remaster Megadeth's eight-album back catalog on Capitol Records,<ref>{{cite news|work=[[Blabbermouth.net]]|title=Dave Mustaine: 'I Am And Always Will Be Megadeth'|url=http://www.blabbermouth.net/news/dave-mustaine-i-am-and-always-will-be-megadeth/|date=July 12, 2003|access-date=November 25, 2013}}</ref> re-recording portions that were missing.<ref>{{cite web|last=Ayers|first=Chris|title=Megadeth: Remixed and Remastered Series|url=https://exclaim.ca/music/article/megadeth-remixed_remastered_series|work=[[Exclaim!]]|date=February 28, 2005|access-date=December 19, 2024}}</ref>

===2004–2005: Reformation and ''The System Has Failed''===
In May 2004, Mustaine returned to his solo project. Contractual obligations to the band's European label, [[EMI]], resulted in the recording's release as a Megadeth album.<ref>{{cite web|last=Wiederhorn|first=Jon|title=Dave Mustaine, Megadeth Return To Life With New System|url=http://www.mtv.com/news/1490891/dave-mustaine-megadeth-return-to-life-with-new-system/|archive-url=https://web.archive.org/web/20140514095917/http://www.mtv.com/news/1490891/dave-mustaine-megadeth-return-to-life-with-new-system/|url-status=dead|archive-date=May 14, 2014|publisher=[[MTV]]|date=September 10, 2004|access-date=May 19, 2014}}</ref> Mustaine reformed the band and contacted the fan-favorite ''Rust in Peace'' lineup to re-record backing tracks. While drummer Nick Menza agreed to return, both Marty Friedman and David Ellefson were unable to come to an agreement with Mustaine.<ref>{{cite web|last=Nalbandian|first=Bob|title=Dave Mustaine Interview|date=August 28, 2004|publisher=Hard Radio|url=http://www.hardradio.com/shockwaves/mustaine6.php3 |access-date=November 19, 2006}}</ref> Menza was sent home shortly after rehearsals began, a few days before the start of a tour supporting Megadeth's upcoming album. Mustaine said Menza was insufficiently prepared for the physical demands of a US tour, and "it just didn't work out".<ref>{{cite news|url=http://www.blabbermouth.net/news/megadeth-s-mustaine-says-nick-menza-wasn-t-prepared-to-tour-with-the-band/|title=Megadeth's Mustaine Says Nick Menza Wasn't Prepared To Tour With The Band|work=[[Blabbermouth.net]]|date=November 16, 2004|access-date=December 3, 2013}}</ref> This was the first album without Ellefson. Chris Poland, who played lead guitar on Megadeth's first two albums, was hired to contribute guitar solos to the new album, working with Mustaine for the first time since the 1990s. Poland opted to serve only as a session musician, wanting to remain focused on his jazz fusion project [[OHM (band)|OHM]].<ref>{{cite web|last=Gitter|first=Mike|title=Where Are They Now? Chris Poland of Megadeth|url=http://noisecreep.com/chris-poland-megadeth/|website=[[Noisecreep]]|date=October 24, 2012|access-date=December 18, 2024}}</ref>

[[File:Megadeth at Sauna crop.jpg|thumb|right|alt=A four-piece band cheering the audience at the end of a concert|Megadeth's 2004–2006 lineup at [[Sauna Open Air Metal Festival]] 2005: From left to right: [[Shawn Drover]], [[James MacDonough]], Dave Mustaine and [[Glen Drover]].]]
''[[The System Has Failed]]'' was released in September 2004. Critics heralded it as a return to form; ''[[Revolver (magazine)|Revolver]]'' gave the album a favorable review, calling it "Megadeth's most vengeful, poignant and musically complex offering since 1992's ''Countdown to Extinction''".<ref>{{cite news|first=Joey|last=Dizon|title=A Life of 'Deth|url=http://www.philstar.com/modern-living/2012/07/07/825130/life-deth|newspaper=[[The Philippine Star]]|date=July 7, 2012|access-date=July 17, 2014}}</ref> The album marked a shift toward the band's earlier sound; journalist Amy Sciarretto of ''[[CMJ New Music Report]]'' wrote that the album contained "[[neo-thrash]] riffing with biting, politically charged lyrics".<ref>{{cite journal|last=Sciarretto|first=Amy|title=Genre Focus&nbsp;– Megadeth; The System Has Failed|journal=[[CMJ New Music Report]]|date=September 13, 2004|page=22|url=https://books.google.com/books?id=pcY5T_TgSEUC&q=megadeth+cmj+report&pg=PA22|access-date=November 22, 2013}}</ref> ''The System Has Failed'' debuted at number eighteen on the ''Billboard'' 200<ref name="Albums">{{cite magazine|title=Megadeth&nbsp;– Chart History (Albums)|url=https://www.billboard.com/artist/310366/megadeth/chart?f=305|magazine=[[Billboard (magazine)|Billboard]]|access-date=December 4, 2013}}</ref> and was led by "Die Dead Enough", which reached number 21 on the US [[Mainstream Rock (chart)|Mainstream Rock chart]].<ref name="Songs">{{cite magazine|title=Megadeth&nbsp;– Chart History (Songs)|url=https://www.billboard.com/artist/310366/megadeth/chart?f=376|magazine=[[Billboard (magazine)|Billboard]]|access-date=December 4, 2013}}</ref> Mustaine announced that the album would be the band's last and would be followed by a farewell tour, after which he would focus on a solo career.<ref>{{cite news|title=Dave Mustaine Discusses Going Solo, Dimebag, Kerry King And Metallica|url=http://www.blabbermouth.net/news/dave-mustaine-discusses-going-solo-dimebag-kerry-king-and-metallica/|work=[[Blabbermouth.net]]|date=February 11, 2005|access-date=December 4, 2013}}</ref>

Megadeth began the Blackmail the Universe world tour in October, enlisting touring bassist [[James MacDonough]] of Iced Earth and guitarist [[Glen Drover]] of [[Eidolon (band)|Eidolon]] and [[King Diamond]]. Five days before the first show, Menza was replaced by [[Shawn Drover]], who remained with the band as a regular member.<ref>{{cite web|title=Megadeth Tour Manager Talks About Drummer Nick Menza's Departure|url=http://www.bravewords.com/news/19670|work=[[Brave Words & Bloody Knuckles]]|date=November 5, 2004|access-date=December 4, 2013|archive-date=May 15, 2013|archive-url=https://web.archive.org/web/20130515172806/http://www.bravewords.com/news/19670|url-status=dead}}</ref> The band toured the US with [[Exodus (band)|Exodus]] and Europe with Diamond Head and [[Dungeon (band)|Dungeon]].<ref>{{cite news|title=Updated: Exodus Added To More Dates On Megadeth's U.S. Tour|url=http://www.blabbermouth.net/news/updated-exodus-added-to-more-dates-on-megadeth-s-u-s-tour/|work=[[Blabbermouth.net]]|date=October 16, 2004|access-date=December 4, 2013}}</ref><ref>{{cite news|title=Diamond Head To Support Megadeth In Europe|url=http://www.blabbermouth.net/news/diamond-head-to-support-megadeth-in-europe/|work=[[Blabbermouth.net]]|date=December 30, 2004|access-date=December 4, 2013}}</ref> In June 2005, Capitol released a greatest-hits compilation, ''[[Greatest Hits: Back to the Start]]'', featuring remixed and remastered versions of songs chosen by fans from Megadeth's Capitol albums.<ref>{{cite magazine|last=Begrand|first=Adrien|title=Megadeth: Greatest Hits: Back to the Start|url=https://www.popmatters.com/review/megadeath-greatest2005/|magazine=[[Popmatters]]|date=July 28, 2005|access-date=December 3, 2013}}</ref>

In mid-2005, Mustaine organized an annual thrash metal festival tour, [[Gigantour]]. Megadeth headlined the inaugural tour with acts such as [[Dream Theater]], [[Nevermore]], Anthrax and Fear Factory. Performances at the [[Montreal]] and [[Vancouver]] shows were filmed and recorded for a live DVD-and-CD set released in the second quarter of 2006.<ref>{{cite web|first=Chad|last=Bowar|title=Gigantour DVD Review|url=http://heavymetal.about.com/od/dvdreviews/fr/gigantourdvd.htm|publisher=[[About.com]]|date=October 1, 2006|access-date=July 16, 2014|archive-date=April 2, 2016|archive-url=https://web.archive.org/web/20160402200641/http://heavymetal.about.com/od/dvdreviews/fr/gigantourdvd.htm|url-status=dead}}</ref> On October 9, following the successes of ''The System Has Failed'' and the Blackmail the Universe world tour, Mustaine announced to a sold-out crowd at the [[Pepsi Music Festival|Pepsi Music Rock Festival]] in Argentina that Megadeth would continue to record and tour.<ref>{{cite web|title=Megadeth Will Continue|url=http://www.ultimate-guitar.com/news/general_music_news/megadeth_will_continue.html|publisher=[[Ultimate-Guitar.com]]|date=October 10, 2005|access-date=December 4, 2013}}</ref> The concert, held at [[Estadio Obras Sanitarias|Obras Sanitarias]] stadium in [[Buenos Aires]] in front of 25,000 fans, was filmed and released on DVD as ''[[That One Night: Live in Buenos Aires]]'' in 2007.<ref>{{cite web|first=Greg|last=Prato|title=Megadeth: That One Night: Live in Buenos Aires|url=https://www.allmusic.com/album/that-one-night-live-in-buenos-aires-mw0000487698|website=[[AllMusic]]|date=March 27, 2007|access-date=December 4, 2013}}</ref>

===2006–2008: ''United Abominations''===
In February 2006, bassist James MacDonough left the band over "personal differences".<ref>{{cite news|title=Ex-Megadeth Bassist MacDonough: 'There Is No Animosity Here'|url=http://www.blabbermouth.net/news/ex-megadeth-bassist-macdonough-there-is-no-animosity-here/|work=[[Blabbermouth.net]]|date=February 20, 2006|access-date=December 4, 2013}}</ref> He was replaced by [[James LoMenzo]], who had worked with [[David Lee Roth]], [[White Lion]] and [[Black Label Society]].<ref>{{cite web|title=Megadeth bassist James Lomenzo joins Yamaha Guitars|url=http://www.yamaha.com/artists/newsdetail.html?CNTID=5116386&CTID=325000|publisher=[[Yamaha Corporation]]|date=January 25, 2008|access-date=December 4, 2013}}</ref> The new Megadeth lineup made its live debut headlining the [[Dubai Desert Rock Festival]] in the [[United Arab Emirates]] with Testament.<ref>{{cite news|title=Megadeth Play First Show With Bassist James LoMenzo|url=http://www.blabbermouth.net/news/megadeth-play-first-show-with-bassist-james-lomenzo-photos-available/|work=[[Blabbermouth.net]]|date=March 18, 2006|access-date=December 4, 2013}}</ref> In March, Capitol released a two-disc DVD, ''[[Arsenal of Megadeth]]'', which included archive footage, interviews, live shows, and many of the band's music videos. Due to licensing issues, soundtrack and non-Capitol videos were not included.<ref>{{cite web|first=Chad|last=Bowar|title=Megadeth&nbsp;– Arsenal Of Megadeth DVD|url=http://heavymetal.about.com/od/dvdreviews/gr/megadethdvd.htm|publisher=[[About.com]]|date=March 21, 2006|access-date=December 4, 2013|archive-date=March 3, 2016|archive-url=https://web.archive.org/web/20160303185551/http://heavymetal.about.com/od/dvdreviews/gr/megadethdvd.htm|url-status=dead}}</ref> The second Gigantour began during the third quarter of 2006; Megadeth again headlined, this time with [[Lamb of God (band)|Lamb of God]], [[Opeth]], [[Arch Enemy (band)|Arch Enemy]] and Overkill.<ref>{{cite news|url=http://www.blabbermouth.net/news/gigantour-2006-announced-megadeth-lamb-of-god-opeth-arch-enemy-overkill-confirmed/|title=Gigantour 2006 Announced: Megadeth, Lamb of God, Opeth, Arch Enemy, Overkill Confirmed|work=[[Blabbermouth.net]]|date=July 23, 2006|access-date=December 4, 2013}}</ref> The 2006 tour included three dates in Australia, supported by [[Soulfly]], [[Arch Enemy]] and [[Caliban (band)|Caliban]].<ref>{{cite web|url=http://www.bravewords.com/news/54674?iframe=true&width=95%&height=95%|title=Gigantour 2006&nbsp;– Australian Mini-Tour|work=[[Brave Words & Bloody Knuckles]]|date=November 10, 2006|access-date=December 4, 2013|archive-date=September 4, 2020|archive-url=https://web.archive.org/web/20200904105101/http://bravewords.com/news/gigantour-2006-australian-mini-tour-diary-available-if-satan-had-a-wife-it-would-be-in-the-form-of-angela-gossow|url-status=dead}}</ref>

In May 2006, Megadeth announced that its eleventh studio album, ''[[United Abominations]]'', was near completion. Originally scheduled for release in October, Mustaine said that the band was "putting the finishing touches on it" and postponed its release to May of the following year.<ref>{{cite news|title=Megadeth: New Album Pushed Back To 2007|url=http://www.blabbermouth.net/news/megadeth-new-album-pushed-back-to/|work=[[Blabbermouth.net]]|date=August 23, 2006|access-date=November 25, 2013}}</ref> He commented on the release: "Metal needs a really good old-school record again. I believe I have delivered."<ref>{{cite news|title=Megadeth: 'United Abominations' To Be Released In May|url=http://www.blabbermouth.net/news/megadeth-united-abominations-to-be-released-in-may/|work=[[Blabbermouth.net]]|date=January 21, 2007|access-date=November 28, 2013}}</ref> ''United Abominations'' was the band's first album to feature Glen Drover, Shawn Drover and James LoMenzo. It also has a newer version of "A Tout le Monde" entitled "[[A Tout le Monde#2007 version|À Tout le Monde (Set Me Free)]]". The 2007 version is a duet with [[Cristina Scabbia]] of [[Lacuna Coil]]; it was recorded at a slightly faster tempo than the original and contains an extended solo.<ref name="A Tout le Monde">{{cite news|title=Megadeth's New Version Of 'A Tout Le Monde' To Feature Lacuna Coil's Scabbia|url=http://www.blabbermouth.net/news/megadeth-s-new-version-of-a-tout-le-monde-to-feature-lacuna-coil-s-scabbia/|work=[[Blabbermouth.net]]|date=March 3, 2007|access-date=November 26, 2013}}</ref>

Released in May 2007, ''United Abominations'' debuted at number eight on the ''Billboard'' 200, selling 54,000 copies in the first week.<ref>{{cite magazine|last=Hasty|first=Katie|date=May 23, 2007|url=https://www.billboard.com/articles/news/1051972/linkin-park-scores-years-best-debut-with-midnight|title=Linkin Park Scores Year's Best Debut With 'Midnight'|magazine=[[Billboard (magazine)|Billboard]]|access-date=November 26, 2013}}</ref> In March, Megadeth began a North American tour opening for the newly reformed [[Heaven & Hell (band)|Heaven & Hell]]. The band played with [[Down (band)|Down]] for Canadian shows and with [[Machine Head (band)|Machine Head]] for the US dates.<ref>{{cite news|last=Freeman|first=John|title=Heaven and Hell (Black Sabbath), Megadeth, Machine Head|url=http://www.dallasobserver.com/2007-05-03/music/heaven-and-hell-black-sabbath-megadeth-machine-head/|access-date=November 26, 2013|newspaper=[[Dallas Observer]]|date=May 3, 2007|archive-date=October 19, 2013|archive-url=https://web.archive.org/web/20131019072912/http://www.dallasobserver.com/2007-05-03/music/heaven-and-hell-black-sabbath-megadeth-machine-head/|url-status=dead}}</ref> A European summer festival tour followed. Late in the year, Megadeth returned to the United States to headline its Tour of Duty.<ref>{{cite web|last=Kilgore|first=Kym|title=Megadeth's 'Tour of Duty'|url=http://www.soundspike.com/story2/12432/megadeths-tour-of-duty/|work=Sound Spike|date=July 10, 2007|access-date=November 27, 2013|url-status=dead|archive-url=https://web.archive.org/web/20131203112537/http://www.soundspike.com/story2/12432/megadeths-tour-of-duty/|archive-date=December 3, 2013}}</ref> In November, the band brought Gigantour to Australia with a lineup including [[Static-X]], [[DevilDriver]] and Lacuna Coil.<ref>{{cite news|title=Megadeth, Static-X, DevilDriver, Lacuna Coil Team Up For Australia's Gigantour|url=http://www.blabbermouth.net/news/megadeth-static-x-devildriver-lacuna-coil-team-up-for-australia-s-gigantour/|work=[[Blabbermouth.net]]|date=August 8, 2007|access-date=November 28, 2013}}</ref>

[[File:ChrisBroderickbyTannerWolff.jpg|thumb|upright|Guitarist [[Chris Broderick]] joined Megadeth in 2008, replacing Glen Drover.]]
In January 2008, Glen Drover quit Megadeth, stating that he was tired of the frequent touring and wanted to spend more time with his family. He also cited personal issues with other band members.<ref>{{cite web|last=Dodgin|first=Rich|title=Interview with Glen Drover|url=http://allabouttherock.co.uk/interview-glen-drover/|work=All About the Rock|date=October 31, 2013|access-date=November 26, 2013}}</ref> Drover was replaced by [[Chris Broderick]], formerly of [[Nevermore]] and [[Jag Panzer]].<ref>{{cite web|first=Robert|last=Laing|url=http://www.musicradar.com/guitarist/rumour-megadeth-to-recruit-new-guitarist-244099|title=Rumour: Megadeth to recruit new guitarist|publisher=[[MusicRadar]]|date=January 8, 2008|access-date=November 29, 2013}}</ref> Broderick was initially asked by Mustaine's management company at the end of 2007 if he would be interested in auditioning for Megadeth. After an informal meeting at Mustaine's house, Broderick was introduced as the band's new guitarist.<ref>{{cite web|first=Andy|last=Aledort|url=https://www.guitarworld.com/interview-megadeths-chris-broderick-talks-technique|title=Interview: Megadeth's Chris Broderick Talks Technique|work=[[Guitar World]]|date=June 13, 2013|access-date=November 29, 2013|archive-url=https://web.archive.org/web/20131203022931/http://www.guitarworld.com/interview-megadeths-chris-broderick-talks-technique|archive-date=December 3, 2013|url-status=dead}}</ref> Mustaine complimented Broderick's playing skills and called him "the best guitarist Megadeth has ever had".<ref>{{cite web|first=Terry|last=Bezer|url=http://www.metalhammer.co.uk/news/megadeths-dave-mustaine-broderick-is-best-guitarist-megadeth-has-ever-had/ |title=Megadeth's Dave Mustaine: Broderick Is 'Best Guitarist Megadeth Has Ever Had' |work=[[Metal Hammer]] |date=March 9, 2009 |access-date=November 29, 2013 |url-status=dead |archive-url=https://web.archive.org/web/20131203041959/http://www.metalhammer.co.uk/news/megadeths-dave-mustaine-broderick-is-best-guitarist-megadeth-has-ever-had/ |archive-date=December 3, 2013 }}</ref> Broderick's former Nevermore bandmate, [[Van Williams (musician)|Van Williams]], congratulated Megadeth on "getting one hell of a good player, more importantly they're getting a great guy to hang out with and a true friend".<ref>{{cite news|title=Nevermore drummer: Megadeth is getting "One Hell Of A Good Player, Great Guy And True Friend"|url=http://www.blabbermouth.net/news/nevermore-drummer-megadeth-is-getting-one-hell-of-a-good-player-great-guy-and-true-friend/|work=[[Blabbermouth.net]]|date=January 16, 2008|access-date=November 29, 2013}}</ref>

The new lineup made its live debut at the [[Helsinki Ice Hall]] on February 4. The 2008 Gigantour, with 29 North American dates, began shortly afterwards.<ref>{{cite web|author=''Guitar World'' staff|title=Dave Mustaine Announces Gigantour 2008 & New Guitarist|url=https://www.guitarworld.com/dave-mustaine-announces-gigantour-2008-new-guitarist|work=[[Guitar World]]|date=January 14, 2008|access-date=July 5, 2014|archive-url=https://web.archive.org/web/20140714224029/http://www.guitarworld.com/dave-mustaine-announces-gigantour-2008-new-guitarist|archive-date=July 14, 2014|url-status=dead}}</ref> Mustaine wanted a shorter lineup, allowing each band a chance to perform well. The third tour featured [[In Flames]], [[Children of Bodom]], [[Job for a Cowboy]] and [[High on Fire]].<ref>{{cite news|last=Ratliff|first=Ben|title=Thrash Times Five When Bands Convene|url=https://www.nytimes.com/2008/04/24/arts/music/24giga.html?_r=0|access-date=November 28, 2013|newspaper=[[The New York Times]]|date=April 24, 2008}}</ref> Megadeth continued the Tour of Duty in South America and Mexico in May and June. A compilation album, ''[[Anthology: Set the World Afire]]'', was released in September 2008.<ref>{{cite web|last=Bowar|first=Chad|title=Megadeth&nbsp;– Anthology: Set The World Afire|url=http://heavymetal.about.com/od/cdreviews/fr/megadethantholo.htm|publisher=[[About.com]]|date=September 30, 2008|access-date=November 28, 2013|archive-date=March 4, 2016|archive-url=https://web.archive.org/web/20160304061419/http://heavymetal.about.com/od/cdreviews/fr/megadethantholo.htm|url-status=dead}}</ref>

===2009–2010: ''Endgame'' and Ellefson's return===
In February 2009, Megadeth and Testament were scheduled on the European "Priest Feast" tour, with Judas Priest as headliners.<ref>{{cite news|title='Priest Feast' Featuring Judas Priest, Megadeth, Testament: Dutch Date Added|url=http://www.blabbermouth.net/news/priest-feast-featuring-judas-priest-megadeth-testament-dutch-date-added/|work=[[Blabbermouth.net]]|date=October 29, 2008|access-date=November 19, 2013}}</ref> At this time, Metallica, who had been inducted into the [[Rock and Roll Hall of Fame]], invited Mustaine to attend the ceremony. Mustaine was informed that he would not be inducted to the Hall of Fame because such honors were granted only to those members who received recording credit on a Metallica album.{{sfn|Mustaine|2011|p=370}} Mustaine congratulated the group respectfully, and honored his commitment to the European tour with Judas Priest.<ref>{{cite news|title=Dave Mustaine to Metallica: I Am So Very Proud of All You Have Accomplished|url=http://www.blabbermouth.net/news/dave-mustaine-to-metallica-i-am-so-very-proud-of-all-you-have-accomplished/|work=[[Blabbermouth.net]]|date=February 27, 2009|access-date=November 19, 2013}}</ref> In April, Megadeth and Slayer co-headlined the Canadian Carnage. This was the first time they had performed together in more than 15 years. Machine Head and [[Suicide Silence]] opened for the four shows that occurred later in June.<ref>{{cite news|title=Megadeth And Slayer To Co-Headline 'Canadian Carnage' Trek|url=http://www.blabbermouth.net/news/megadeth-and-slayer-to-co-headline-canadian-carnage-trek/|work=[[Blabbermouth.net]]|date=April 27, 2009|access-date=November 19, 2013}}</ref>

In May, Megadeth finished recording its twelfth album, ''[[Endgame (Megadeth album)|Endgame]]''.<ref>{{cite web|first=Terry |last=Bezer |url=http://www.metalhammer.co.uk/news/megadeth-reveal-more-about-new-album/ |title=Megadeth Reveal More About New Album |work=[[Metal Hammer]] |date=June 19, 2009 |access-date=November 19, 2013 |url-status=dead |archive-url=https://web.archive.org/web/20131215132405/http://www.metalhammer.co.uk/news/megadeth-reveal-more-about-new-album/ |archive-date=December 15, 2013 }}</ref> The release date for ''Endgame'' was announced on the Megadeth official website, and ''[[Metal Hammer]]'' was the first to review the album track-by-track.<ref>{{cite web|first=Terry|last=Bezer |title=Megadeth 'Endgame' Track-By-Track Preview |url=http://www.metalhammer.co.uk/news/megadeth-endgame-track-by-track-preview/ |date=July 27, 2009 |work=[[Metal Hammer]] |access-date=November 19, 2013 |url-status=dead |archive-url=https://web.archive.org/web/20090815084407/http://www.metalhammer.co.uk/news/megadeth-endgame-track-by-track-preview/ |archive-date=August 15, 2009 }}</ref> Megadeth began its Endgame tour in October, and finished it in December. The tour featured a number of supporting acts, including Machine Head, Suicide Silence, and [[Warbringer]].<ref>{{cite magazine|first=David|last=Buchanan|url=https://consequence.net/2009/09/megadeth-brings-endgame-to-life-tours-north-america/|title=Megadeth brings Endgame to life, tours North America|magazine=[[Consequence of Sound]]|date=September 15, 2009|access-date=November 19, 2013}}</ref> In January 2010, Megadeth was set to embark on the American Carnage tour with Slayer and Testament, but the tour was postponed due to [[Tom Araya]]'s back surgery.<ref>{{cite news|url=http://www.blabbermouth.net/news/slayer-megadeth-testament-complete-american-carnage-details-revealed/|title=Slayer, Megadeth, Testament: Complete 'American Carnage' Details Revealed|work=[[Blabbermouth.net]]|date=November 16, 2009|access-date=November 19, 2013}}</ref> Several weeks later, Megadeth's "[[Head Crusher]]" was nominated for Best Metal Performance at the [[52nd Annual Grammy Awards|2010 Grammy Awards]], the band's eighth Grammy nomination in 19 years.<ref>{{cite web|url=http://www.roadrunnerrecords.com/news/megadeth-s-head-crusher-nominated-for-a-grammy|title=Megadeth's "Head Crusher" Nominated For a Grammy|publisher=[[Roadrunner Records]]|date=July 12, 2011|access-date=November 19, 2013}}</ref>

[[File:Megadeth - 2017216231435 2017-08-04 Wacken - Sven - 1D X MK II - 1221 - AK8I0437.jpg|thumb|left|Early bassist [[David Ellefson]] rejoined Megadeth in 2010 after an eight year hiatus and remained in the band until 2021.]]
In March, Megadeth embarked on the Rust in Peace 20th Anniversary Tour, which took place in North America and had support from Testament and Exodus. During the tour, Megadeth played ''Rust in Peace'' in its entirety.<ref>{{cite web|author=''Guitar World'' staff|url=https://www.guitarworld.com/megadeth-announce-rust-peace-20th-anniversary-tour-dates|title=Megadeth Announce 'Rust In Peace' 20th Anniversary Tour Dates|work=[[Guitar World]]|date=January 25, 2010|access-date=November 19, 2013|archive-url=https://web.archive.org/web/20131217221720/http://www.guitarworld.com/megadeth-announce-rust-peace-20th-anniversary-tour-dates|archive-date=December 17, 2013|url-status=dead}}</ref> Prior to the start of the tour, early bassist [[David Ellefson]] rejoined Megadeth after eight years. In an interview for ''[[Classic Rock (magazine)|Classic Rock]]'', he stated that Shawn Drover contacted him, informing him that bassist LoMenzo was leaving the band, saying "if ever there was a time for you and Dave [Mustaine] to talk, now is it".<ref>{{cite web|first=Malcolm |last=Dome |url=http://www.classicrockmagazine.com/news/dave-ellefson-exclusive-why-im-back-in-megadeth/ |title=David Ellefson Exclusive: Why I'm Back In Megadeth |work=[[Classic Rock (magazine)|Classic Rock]] |date=February 9, 2010 |access-date=November 19, 2013 |url-status=dead |archive-url=https://web.archive.org/web/20131101110346/http://www.classicrockmagazine.com/news/dave-ellefson-exclusive-why-im-back-in-megadeth/ |archive-date=November 1, 2013 }}</ref>

Megadeth, along with Metallica, Slayer, and Anthrax, collectively known as the "big four" of thrash metal, agreed to perform on the same bill during mid-2010. These performances were part of the [[Sonisphere Festival]] and were held in a number of European countries.<ref>{{cite web|author=MusicRadar staff|url=http://www.musicradar.com/news/guitars/thrash-metals-big-four-for-sonisphere-2010-229761/|title=Thrash metal's 'Big Four' for Sonisphere 2010!|publisher=[[MusicRadar]]|date=December 15, 2009|access-date=November 20, 2013}}</ref> One such performance in [[Sofia]], Bulgaria, was filmed and released as a full-length video entitled ''[[The Big Four: Live from Sofia, Bulgaria]]''.<ref>{{cite magazine|first=Andre|last=Paine|url=https://www.billboard.com/articles/news/957831/metallica-heading-to-cinemas|title=Metallica Heading To Cinemas|magazine=[[Billboard (magazine)|Billboard]]|date=June 10, 2010|access-date=November 20, 2013}}</ref> These shows continued the following year in the United States. The first took place in [[Indio, California]], and was the only scheduled show in the United States at the time,<ref>{{cite web|first=Ryan J.|last=Downey|url=http://www.mtv.com/news/1662574/big-4-concert-metallica-anthrax-slayer-megadeth/|archive-url=https://web.archive.org/web/20141225010722/http://www.mtv.com/news/1662574/big-4-concert-metallica-anthrax-slayer-megadeth/|url-status=dead|archive-date=December 25, 2014|title=Metallica, Megadeth, Slayer And Anthrax Make Big 4 History|publisher=[[MTV]]|date=April 25, 2011|access-date=November 20, 2013}}</ref> although a second American production was held at [[Yankee Stadium]] in New York City shortly afterwards.<ref>{{cite web|first=Ben|last=Ratliff|url=https://www.nytimes.com/2011/09/16/arts/music/music-review-big-four-with-anthrax-megadeth-slayer-and-metallica.html|title=Metallica Earns Its Top Billing of the Big Four|work=[[The New York Times]]|date=September 15, 2011|access-date=November 20, 2013}}</ref>

In July 2010, after the European "big four" shows, Megadeth and Slayer commenced the first leg of the [[American Carnage Tour]], where Megadeth played ''Rust in Peace'' in its entirety, while Slayer performed its album ''[[Seasons in the Abyss]]'', both of which were released in 1990.<ref>{{cite web|author=''Guitar World'' staff|url=https://www.guitarworld.com/slayer-perform-complete-seasons-abyss-album-upcoming-tour|title=Slayer to Perform Complete 'Seasons in the Abyss' Album on Upcoming Tour|work=[[Guitar World]]|date=April 26, 2010|access-date=November 20, 2013|archive-url=https://web.archive.org/web/20170824150745/http://www.guitarworld.com/slayer-perform-complete-seasons-abyss-album-upcoming-tour|archive-date=August 24, 2017|url-status=dead}}</ref> From these shows onward, Vic Rattlehead started making sustained onstage appearances, to improve the visual facet of Megadeth's live performances.<ref>{{cite web|last=Bezer |first=Terry |title=Vic Rattlehead Makes Megadeth Live Debut |url=http://www.metalhammer.co.uk/news/vic-rattlehead-makes-megadeth-live-debut/ |work=[[Metal Hammer]] |date=August 20, 2010 |access-date=March 6, 2013 |url-status=dead |archive-url=https://web.archive.org/web/20130405133637/http://www.metalhammer.co.uk/news/vic-rattlehead-makes-megadeth-live-debut/ |archive-date=April 5, 2013 }}</ref> Shortly afterward, the two bands united with Anthrax for the [[Jägermeister Music Tour]] in late 2010.<ref>{{cite web|first=Pete|last=Freedman|url=https://www.spin.com/2010/09/backstage-anthrax-megadeth-slayer/|title=Backstage with Anthrax, Megadeth & Slayer!|work=[[Spin (magazine)|Spin]]|date=September 30, 2010|access-date=November 20, 2013}}</ref> During the final show of the tour, Kerry King joined Megadeth on stage at the [[Gibson Amphitheatre]] in Hollywood to perform Megadeth's "Rattlehead". It was the first time that King had performed onstage with Megadeth since 1984.<ref>{{cite magazine|first=Megan|last=Vick|url=https://www.billboard.com/music/music-news/slayers-kerry-king-performs-with-megadeth-952724/|title=Slayer's Kerry King Performs with Megadeth|magazine=[[Billboard (magazine)|Billboard]]|date=October 25, 2010|access-date=November 20, 2013}}</ref> Megadeth and Slayer again shared the stage for the [[European Carnage Tour]] in March and April 2011.<ref>{{cite news|url=http://www.blabbermouth.net/news/slayer-megadeth-to-join-forces-for-european-carnage-tour/|title=Slayer, Megadeth To Join Forces For 'European Carnage' Tour|work=[[Blabbermouth.net]]|date=December 18, 2010|access-date=November 20, 2013}}</ref> Megadeth also headlined the fourth annual [[Rockstar Mayhem Festival]] in July and August the same year.<ref>{{cite web|first=Matt|last=Debenedictis|url=http://noisecreep.com/mayhem-festival-2011-lineup-disturbed-godsmack-megadeth/|title=Disturbed, Godsmack, Megadeth Headlining Rockstar Mayhem Festival 2011|website=[[Noisecreep]]|date=January 31, 2011|access-date=November 20, 2013}}</ref>

In September, the band released the DVD album ''[[Rust in Peace Live]]'', recorded at the [[Hollywood Palladium]] in Los Angeles.<ref>{{cite web|author=''Guitar World'' staff|url=https://www.guitarworld.com/megadeth-release-rust-peace-live-blu-ray-dvd-and-cd|title=Megadeth to Release 'Rust In Peace Live' Blu-Ray, DVD and CD|work=[[Guitar World]]|date=June 23, 2010|access-date=November 20, 2013|archive-url=https://web.archive.org/web/20110610033053/http://www.guitarworld.com/megadeth-release-rust-peace-live-blu-ray-dvd-and-cd|archive-date=June 10, 2011|url-status=dead}}</ref> Later that month, Megadeth released "[[Sudden Death (song)|Sudden Death]]" for the video game ''[[Guitar Hero: Warriors of Rock]]''.<ref>{{cite web|first=Thomas|last=East|url=http://www.computerandvideogames.com/262448/guitar-hero-warriors-of-rock-megadeth-trailer/|title=Guitar Hero: Warriors Of Rock Megadeth trailer|date=September 1, 2010|work=[[Official Nintendo Magazine]]|access-date=November 20, 2013}}</ref> The song was commissioned by the publishers of the [[Guitar Hero]] franchise, who wanted the track to feature dark lyrics and multiple guitar solos.<ref>{{cite magazine|first=Chris|last=Harris|url=https://www.rollingstone.com/music/news/mustaine-pens-fresh-megadeth-track-for-guitar-hero-20100604|title=Mustaine Pens Fresh Megadeth Track For 'Guitar Hero'|magazine=[[Rolling Stone]]|date=June 4, 2010|access-date=November 20, 2013}}</ref> It was nominated for Best Metal Performance at the [[53rd Annual Grammy Awards|2011 Grammy ceremony]].<ref>{{cite web|first=Amy|last=Sciarretto|url=http://noisecreep.com/grammy-nominees-2011-metal-hard-rock/|title=Grammy Nominees 2011 Announced for Hard Rock and Metal|website=[[Noisecreep]]|date=December 1, 2010|access-date=November 20, 2013}}</ref>

===2011–2014: ''Thirteen'' and ''Super Collider''===
Megadeth returned to its own Vic's Garage studio in 2011 to record its thirteenth album, to be produced by [[Johnny K]], because Andy Sneap, the producer of Megadeth's previous two albums, was unavailable.<ref>{{cite magazine|first=Gary|last=Graff|url=https://www.billboard.com/articles/news/465450/megadeths-dave-mustaine-6-questions-about-thirteen|title=Megadeth's Dave Mustaine: 6 Questions About 'Thirteen'|magazine=[[Billboard (magazine)|Billboard]]|date=October 31, 2011|access-date=November 20, 2013}}</ref> The album was titled ''[[Thirteen (Megadeth album)|Thirteen]]'' and featured previously released tracks such as "Sudden Death" and "Never Dead".<ref>{{cite magazine|first=Greg|last=Prato|magazine=[[Rolling Stone]]|url=https://www.rollingstone.com/music/news/dave-mustaine-reveals-new-megadeth-album-details-20110712|title=Dave Mustaine Reveals New Megadeth Album Details|date=July 12, 2011|access-date=November 20, 2013}}</ref> The album was released in November 2011, and charted at number eleven on the ''Billboard'' 200; its lead single "[[Public Enemy No. 1 (Megadeth song)|Public Enemy No.&nbsp;1]]" received a Grammy nomination for [[Best Hard Rock/Metal Performance]], but did not win.<ref>{{cite web|first=Brett|last=Bittke|title=Megadeth Receives their 10th Grammy Nomination|url=http://screamermagazine.com/press-releases/megadeth-receives-their-10th-grammy-nomination/|publisher=[[Screamer magazine]]|date=December 2, 2011|access-date=November 20, 2013}}</ref> Shortly after the album was released, Dave Mustaine stated that, after a four-year hiatus, there would be a new Gigantour tour in early 2012.<ref>{{cite magazine|first=Alex|last=Young|url=https://consequence.net/2011/11/megadeth-motorhead-team-up-for-gigantour-2012/|title=Megadeth, Motorhead, team up for Gigantour 2012|magazine=[[Consequence of Sound]]|date=November 1, 2011|access-date=November 20, 2013}}</ref> The lineup consisted of [[Motörhead]], [[Volbeat]], and Lacuna Coil alongside Megadeth.<ref>{{cite magazine|first=Dave|last=MacIntyre|title=Gigantour 2012 featuring Lacuna Coil, Volbeat, Motorhead and Megadeth|url=https://www.popmatters.com/review/154651-gigantour-2012-featuring-lacuna-coil-volbeat-motorhead-and-megadeth/|magazine=[[PopMatters]]|date=February 16, 2012|access-date=November 20, 2013}}</ref> After the conclusion of Gigantour, [[Rob Zombie]] and Megadeth embarked on a nine-date co-headlining US tour in the summer of 2012.<ref>{{cite web|first=Tree|last=Riddle|title=Rob Zombie and Megadeth To Embark on Co-Headlining 2012 U.S. Tour|url=http://loudwire.com/rob-zombie-megadeth-co-headlining-2012-u-s-tour/|work=[[Loudwire]]|date=February 21, 2012|access-date=November 20, 2013}}</ref>

In September 2012, it was announced that Megadeth would re-release ''Countdown to Extinction'' in honor of the album's 20th anniversary. To mark the occasion, Megadeth launched a tour in which the band performed the album live in its entirety.<ref>{{cite web|last=Childers|first=Chad|title=Megadeth to Celebrate 20th Anniversary of 'Countdown to Extinction' With Reissue and Fall 2012 Tour|url=http://loudwire.com/megadeth-20th-anniversary-countdown-to-extinction-reissue-fall-2012-tour/|work=[[Loudwire]]|date=September 10, 2012|access-date=November 17, 2013}}</ref> One performance, filmed at the [[Pomona Fox Theater]], was released as a live album, ''[[Countdown to Extinction: Live]],'' the following year.<ref>{{cite web|last=Ouellette|first=Mary|title=Megadeth Reveal 'Countdown To Extinction: Live' Trailer|url=http://loudwire.com/megadeth-reveal-countdown-to-extinction-live-trailer/|work=[[Loudwire]]|date=September 21, 2013|access-date=November 17, 2013}}</ref> Another track from ''Thirteen'', "[[Whose Life (Is It Anyways?)]]", was nominated for Best Hard Rock/Metal Performance at the [[55th Annual Grammy Awards|2013 Grammy Awards]], but lost to [[Halestorm]]'s "[[Love Bites (So Do I)]]".<ref>{{cite web|title=Halestorm: "Winning A Grammy Is A Huge Milestone For Us" |url=http://www.metalhammer.co.uk/news/halestorm-winning-a-grammy-is-a-huge-milestone-for-us/ |work=[[Metal Hammer]] |date=February 12, 2013 |access-date=November 17, 2013 |url-status=dead |archive-url=https://web.archive.org/web/20131203063529/http://www.metalhammer.co.uk/news/halestorm-winning-a-grammy-is-a-huge-milestone-for-us/ |archive-date=December 3, 2013 }}</ref>

[[File:Flickr - Official U.S. Navy Imagery - Shawn Drover and Chris Broderick, members of the band Megadeth, sign autographs in the crew mess aboard USS Helena.jpg|thumb|left|alt=Two men signing autographs in a crowded submarine|Shawn Drover and Chris Broderick sign autographs aboard the Los Angeles-class attack submarine [[USS Helena (SSN-725)|USS ''Helena'' (SSN-725)]].]]
In August, Megadeth announced the recording of its fourteenth album with producer Johnny K.<ref>{{cite news|title=Megadeth Taps Producer Johnny K For New Album|url=http://www.blabbermouth.net/news/megadeth-taps-producer-johnny-k-for-new-album/|work=[[Blabbermouth.net]]|date=August 22, 2012|access-date=August 23, 2012}}</ref> At the start of 2013, Megadeth left [[Roadrunner Records]] for Mustaine's newly founded label, Tradecraft, distributed through [[Universal Music Group]].<ref>{{cite news|title=Megadeth Working On 'Dark', 'Heavy' And 'Fast' New Album|url=http://www.blabbermouth.net/news/megadeth-working-on-dark-heavy-and-fast-new-album/|work=[[Blabbermouth.net]]|date=January 28, 2013|access-date=January 29, 2013}}</ref><ref>{{cite web|last=Hartmann|first=Graham|title=Megadeth Announce June Release for Upcoming Album 'Super Collider'|url=http://loudwire.com/megadeth-june-release-upcoming-album-super-collider/|work=[[Loudwire]]|date=February 12, 2013|access-date=February 12, 2013}}</ref> The album, ''[[Super Collider (album)|Super Collider]]'', was released in June and debuted at number six on the ''Billboard'' 200, the band's highest chart position since 1994's ''Youthanasia''.<ref>{{cite magazine|first=Keith|last=Caulfield|title=Queens Of The Stone Age Get First No. 1 Album On Billboard 200|url=https://www.billboard.com/biz/articles/news/chart-alert/1566510/queens-of-the-stone-age-get-first-no-1-album-on-billboard-200|magazine=[[Billboard (magazine)|Billboard]]|date=June 12, 2013|access-date=September 28, 2013}}</ref> Critical reaction to the album, however, was mixed, with criticism directed towards the album's deviation from the band's traditional metal sound.<ref name="MC">{{cite web|url=https://www.metacritic.com/music/super-collider/megadeth|title=Super Collider&nbsp;– Megadeth|work=[[Metacritic]]|publisher=[[CBS Interactive]]|access-date=June 17, 2013}}</ref> Shortly after the release of ''Super Collider'', Mustaine stated that he had already started thinking about a fifteenth Megadeth album. He said this had been spurred by the death of Slayer guitarist [[Jeff Hanneman]], which gave him a sense of mortality.<ref>{{cite web|last=Wise|first=Lauren|title=Megadeth's Dave Mustaine: There's Been a Renaissance With Us|url=http://blogs.phoenixnewtimes.com/uponsun/2013/11/dave-mustaine-interview-2013-megadeth.php?page=2|work=[[Phoenix New Times]]|date=November 25, 2013|access-date=December 16, 2013|archive-date=December 17, 2013|archive-url=https://web.archive.org/web/20131217005700/http://blogs.phoenixnewtimes.com/uponsun/2013/11/dave-mustaine-interview-2013-megadeth.php?page=2|url-status=dead}}</ref> Mustaine elaborated: "You know, time is short. Nobody knows how long they're gonna live. You see what happened with Jeff Hanneman, so I wanna write as much as I can while I can."<ref>{{cite web|title=Megadeth Planning New Album: 'Time Is Short'|url=http://www.ultimate-guitar.com/news/general_music_news/megadeth_planning_new_album_time_is_short.html|publisher=[[Ultimate-Guitar.com]]|date=July 24, 2013|access-date=November 17, 2013}}</ref>

The 2013 edition of Gigantour featured [[Black Label Society]], [[Hellyeah]], [[Device (metal band)|Device]], and [[Newsted]] as opening bands.<ref>{{cite web|last=Hartmann|first=Graham|title=Black Label Society Join Lineup for Megadeth's Gigantour 2013 + Dates Announced|url=http://loudwire.com/black-label-society-megadeth-gigantour-2013-dates-announced/|work=[[Loudwire]]|date=May 3, 2013|access-date=June 12, 2014}}</ref> At the final show, [[Jason Newsted]], Metallica's former bassist, joined Megadeth onstage to perform "Phantom Lord", a song Mustaine had co-written during his stint with Metallica.<ref>{{cite web|last=Bowar|first=Chad|title=Megadeth and Jason Newsted Play Metallica's 'Phantom Lord' During Toronto Gigantour Finale|url=http://loudwire.com/megadeth-jason-newsted-play-metallica-phantom-lord-toronto-gigantour-finale/|work=[[Loudwire]]|date=August 12, 2013|access-date=June 12, 2014}}</ref> Early in 2014, Megadeth was slated to play the [[Soundwave (Australian music festival)|Soundwave]] festival in Australia, but pulled out over a disagreement with tour promoter A.&nbsp;J. Maddah concerning the band's sideshows with Newsted.<ref>{{cite news|last=Vincent|first=Peter|title=Soundwave 2014: Megadeth cancels Australian tour|url=https://www.smh.com.au/entertainment/music/soundwave-2014-megadeth-cancels-australian-tour-20140210-32b0r.html|access-date=February 15, 2014|newspaper=[[The Sydney Morning Herald]]|date=February 10, 2014}}</ref> [[Icon (Megadeth album)|''Icon'']], an eleven-song compilation of Megadeth's Capitol-era material, was released as part of Universal Music's [[Icon (album series)|Icon series]] in February.<ref>{{cite news|title=Megadeth: 'Icon'-Series Compilation Due This Month|url=http://www.blabbermouth.net/news/megadeth-icon-series-compilation-due-this-month/|work=[[Blabbermouth.net]]|date=February 15, 2014|access-date=July 6, 2014}}</ref>

Megadeth encountered several setbacks throughout 2014. After Ellefson's brother died of cancer in May, the band cancelled its June tour dates to allow him to mourn.<ref>{{cite web |last1=Hartmann |first1=Graham |title=Megadeth Cancel Tour Dates Following Death of Bassist David Ellefson's Brother |url=https://loudwire.com/megadeth-cancel-tour-dates-death-bassist-david-ellefson-brother/ |website=Loudwire |date=May 21, 2014 |access-date=October 21, 2023}}</ref> A planned August concert in [[Tel Aviv]] was canceled due to an [[2014 Israel–Gaza conflict|armed conflict between Israel and Gaza]].<ref>{{cite web|first=Colin|last=Joyce|title=Cee Lo Green and Megadeth Cancel Israel Shows|url=https://www.spin.com/2014/08/cee-lo-green-megadeth-cancel-israel-shows-palestine-conflict/|work=[[Spin (magazine)|Spin]]|date=August 5, 2014|access-date=August 7, 2014}}</ref> Megadeth was scheduled to appear on [[Motörhead]]'s Motörboat cruise in late September, but withdrew because of Mustaine's complications following his cervical spine surgery.<ref>{{cite magazine|last=Leight|first=Elias|title=Megadeth Pulls Out of Motorhead's Motorboat Cruise|url=https://www.billboard.com/articles/news/6244196/megadeth-motorhead-motorboat-cruise-cancel|magazine=[[Billboard (magazine)|Billboard]]|date=September 10, 2014|access-date=September 17, 2014}}</ref> In October, Mustaine's mother-in-law, who suffered from [[Alzheimer's disease|Alzheimer's]], went missing from a campground; her remains were discovered in late November.<ref>{{cite web |date=November 27, 2014 |title=Body of Missing Woman Found in Julian |website=[[KFMB-TV|CBS8.com]] |url=http://www.cbs8.com/story/27495570/body-found-near-campsite-where-woman-went-missing |access-date=November 28, 2014}}</ref> That same month, Drover quit the band after ten years, wanting to pursue his own musical interests, but has said he is grateful for the career Mustaine gave him.<ref>{{cite web |title=Why Does DAVE MUSTAINE Get Such A Bad Rap? Ex-MEGADETH Drummer SHAWN DROVER Weighs In |url=https://blabbermouth.net/news/why-does-dave-mustaine-get-such-a-bad-rap-ex-megadeth-drummer-shawn-drover-weighs-in |website=[[Blabbermouth]] |access-date=August 3, 2023 |date=July 18, 2023}}</ref> This was quickly followed by the departure of Broderick, due to artistic and musical differences.<ref>{{cite web|first=Martin|last=Kielty|title=Broderick & Drover Quit Megadeth|url=http://teamrock.com/news/2014-11-26/megadeth-chris-broderick-shawn-drover-quit|work=[[Classic Rock (magazine)|Classic Rock]]|date=November 26, 2014|access-date=November 27, 2014}}</ref> Ellefson denied rumors that Megadeth would disband, and said he and Mustaine would continue working on new music.<ref>{{cite web|first=Spencer|last=Kaufman|title=Megadeth's David Ellefson: We Are Not Disbanding|url=http://loudwire.com/megadeth-david-ellefson-not-disbanding/|work=[[Loudwire]]|date=December 2, 2014|access-date=December 3, 2014}}</ref> Mustaine later said one of the reasons for Broderick and Drover leaving was their frustration over Megadeth's fan base demanding a reunion with Friedman and Menza.<ref>{{cite web|first=Dan|last=Epstein|title=Interview: Megadeth's Dave Mustaine Gives Update from the Studio|url=http://www.revolvermag.com/news/interview-megadeths-dave-mustaine-give-update-from-the-studio.html|work=[[Revolver (magazine)|Revolver]]|date=July 20, 2015|access-date=July 22, 2015}}</ref>

===2015–2018: ''Dystopia''===
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| footer = [[Kiko Loureiro]] (left) replaced Chris Broderick in 2015, while [[Dirk Verbeuren]] (right) replaced [[Chris Adler]] the following year.
| image1 = Kiko Loureiro, em Fort Rock, DystopiaTour 2016.jpg
| image2 = Dirk Verbeuren 2016.jpg
}}
[[Lamb of God (band)|Lamb of God]] drummer [[Chris Adler]] and guitarist [[Kiko Loureiro]] of [[Angra (band)|Angra]] were brought in to perform on Megadeth's fifteenth studio album after Mustaine unsuccessfully attempted to reunite the ''Rust in Peace'' lineup.<ref>{{cite web|title=Meet Megadeth's New Guitarist: Kiko Loureiro of Angra|url=https://www.guitarworld.com/meet-megadeths-new-guitarist-kiko-loureiro-angra|website=[[Guitar World]]|date=April 2, 2015|access-date=April 6, 2015|archive-url=https://web.archive.org/web/20160702080953/http://www.guitarworld.com/meet-megadeths-new-guitarist-kiko-loureiro-angra|archive-date=July 2, 2016|url-status=dead}}</ref> In October 2015, Megadeth streamed "[[Fatal Illusion]]" off the album ''[[Dystopia (Megadeth album)|Dystopia]]'', which was released in January 2016.<ref>{{cite web|last=Bienstock|first=Richard|title=Megadeth Premiere New Song, "Fatal Illusion"|url=http://www.revolvermag.com/news/megadeth-premiere-new-song-fatal-illusion.html|work=[[Revolver (magazine)|Revolver]]|date=October 1, 2015|access-date=October 2, 2015}}</ref> In support of ''Dystopia'', Megadeth embarked on a North American tour in February and March with [[Suicidal Tendencies]], [[Children of Bodom]] and [[Havok (band)|Havok]] (though Havok was soon removed from the tour by Megadeth's management following a dispute over a contract).<ref>{{cite news|title=Megadeth, Suicidal Tendencies, Children Bodom: North American Tour Dates Announced|url=http://www.blabbermouth.net/news/megadeth-suicidal-tendencies-children-of-bodom-north-american-tour-dates-announced/|work=[[Blabbermouth.net]]|date=December 7, 2015|access-date=December 7, 2015}}</ref> Mustaine announced that Adler, who was performing with both Lamb of God and Megadeth, was no longer in the band due to scheduling conflicts between the two bands. He was replaced by [[Dirk Verbeuren]] from [[Soilwork]], on Adler's recommendation.<ref>{{cite web|last=Childers|first=Chad|title=Megadeth Officially Confirm Dirk Verbeuren as New Drummer|url=http://loudwire.com/megadeth-officially-confirm-dirk-verbeuren-new-drummer/|work=[[Loudwire]]|date=July 14, 2016|access-date=July 15, 2016}}</ref> A second US tour took place in September and October, with support from [[Amon Amarth]], Suicidal Tendencies, [[Metal Church]],<ref>{{cite news|title=Megadeth Announces U.S. Tour With Amon Amarth, Suicidal Tendencies, Metal Church, Havok|url=http://www.blabbermouth.net/news/megadeth-announces-u-s-tour-with-amon-amarth-suicidal-tendencies-metal-church-havok/|work=[[Blabbermouth.net]]|date=July 18, 2016|access-date=July 18, 2016}}</ref> and [[Butcher Babies]].<ref>{{cite news|title=Butcher Babies Added To Megadeth's Tour With Amon Amarth, Suicidal Tendencies, Metal Church|url=http://www.blabbermouth.net/news/butcher-babies-added-to-megadeth-tour-with-amon-amarth-suicidal-tendencies-metal-church/|work=[[Blabbermouth.net]]|date=September 10, 2016|access-date=September 10, 2016}}</ref> Former drummer Menza died of a heart attack on May 21, 2016, while performing with OHM at a [[The Baked Potato|jazz club]] in Los Angeles.<ref>{{cite web|last=Kennedy|first=Maev|title=Former Megadeth drummer Nick Menza dies after collapsing on stage|url=https://www.theguardian.com/music/2016/may/22/nick-menza-megadeth-drummer-dies-collapsing-stage-los-angeles|work=[[The Guardian]]|date=May 22, 2016|access-date=July 15, 2016}}</ref>

Asked about any further Big Four gigs, Mustaine called for "the powers-that-be" to help put together a new Big Four tour in 2017 as all the respective bands were promoting new albums.<ref>{{cite news|url=http://teamrock.com/news/2016-12-06/megadeths-dave-mustaine-calls-for-2017-big-four-tour|title=Megadeth's Dave Mustaine calls for 2017 Big Four tour|date=December 6, 2016|newspaper=Metal Hammer|language=en-GB|access-date=December 7, 2016}}</ref> ''[[Dystopia (song)|Dystopia]]'''s title track won the [[Grammy Award for Best Metal Performance]] at the [[2017 Grammy Awards]], the band's first win after 12 nominations.<ref name=":0" /> Mustaine, Loureiro, Ellefson, and Verbeuren attended the ceremony; however, album drummer and award recipient Chris Adler<ref>{{cite web |url=https://www.grammy.com/node/218641 |title=Chris Adler|work=The Grammys |access-date=February 20, 2017 |url-status=dead |archive-url=https://web.archive.org/web/20170222054146/https://www.grammy.com/node/218641 |archive-date=February 22, 2017 }}</ref> did not. While accepting the award, the house band played Mustaine's former band Metallica's "[[Master of Puppets (song)|Master of Puppets]]" causing some controversy among fans.<ref>{{cite magazine|last=Teitelman|first=Bram|title=Megadeth's Dave Mustaine Reflects on First Grammy Win, House Band Playing Metallica|url=https://www.billboard.com/music/rock/megadeth-dave-mustaine-interview-grammy-2017-metallica-dystopia-7694277/|magazine=[[Billboard (magazine)|Billboard]]|date=February 19, 2017|access-date=February 20, 2017}}</ref>

In a June 2017 interview with No Brown M&Ms, Mustaine said that Megadeth would enter the studio at the end of the year to begin working on their sixteenth studio album.<ref>{{cite magazine|url=http://loudwire.com/dave-mustaine-megadeth-return-studio-late-2017/|title=Megadeth New Album In 2018|website=[[Loudwire]]|date=June 28, 2017}}</ref> A month later, Mustaine stated on Twitter that he had begun "collecting ideas" for the new album, but stated that they would "probably" enter the studio in mid-2018 to begin recording it for a 2019 release.<ref>{{cite news|url=http://www.blabbermouth.net/news/megadeth-to-probably-begin-recording-new-album-next-summer/|title=Megadeth To 'Probably' Begin Recording New Album Next Summer|website=[[Blabbermouth.net]]|access-date=December 28, 2017}}</ref> The band joined with [[Scorpions (band)|Scorpions]] for a co-headlining tour in the fall of 2017.<ref>{{cite news|url=http://www.blabbermouth.net/news/scorpions-announce-crazy-world-north-american-tour-with-megadeth/|title=SCORPIONS Announce 'Crazy World' North American Tour With MEGADETH|work=Blabbermouth|date=March 22, 2017|access-date=August 5, 2017}}</ref>

In 2018, Megadeth marked their 35th anniversary by re-releasing their 1985 debut album ''Killing Is My Business... And Business Is Good!'', dubbed ''Killing Is My Business... and Business Is Good! - The Final Kill'' on June 8, 2018, as a deluxe package containing remastered versions of all songs to Mustaine's intended vision, a re-cut version of "[[These Boots Are Made for Walkin'|These Boots]]" lyrically adjusted to [[Lee Hazlewood]]'s version, rare live performances of songs off the album during Alice Cooper's Live in the Flesh Tour and the 1984 three song demo.<ref>{{cite web|url=https://loudwire.com/megadeth-final-kill-reissue-killing-is-my-business-and-business-is-good/|author=Childers, Chad|title=Megadeth to Offer 'Final Kill' Reissue of 'Killing Is My Business … And Business Is Good' Disc|website=[[Loudwire]]|date=April 8, 2018 |access-date=April 8, 2018}}</ref>

===2019–2023: Ellefson's second departure and ''The Sick, the Dying... and the Dead!''===
On May 10, 2019, Megadeth entered the studio in [[Franklin, Tennessee]], to begin pre-production of the next album, once again teaming up with ''Dystopia'' co-producer Chris Rakestraw.<ref>{{cite news|title=MEGADETH Enters Studio For New Album Pre-Production|url=http://www.blabbermouth.net/news/megadeth-enters-studio-to-record-new-album/|website=[[Blabbermouth.net]]|access-date=May 10, 2019}}</ref> On June 17, the band announced that all shows scheduled in 2019 (with the exception of the MegaCruise) would be cancelled due to Mustaine being diagnosed with throat cancer;<ref>{{cite web|url=https://www.kerrang.com/the-news/megadeths-dave-mustaine-diagnosed-with-throat-cancer/|title=Megadeth's Dave Mustaine Diagnosed With Throat Cancer|website=[[Kerrang!]]|date=June 17, 2019 |access-date=June 17, 2019}}</ref> of all the cancelled dates, the band was scheduled to support [[Ozzy Osbourne]] on the North American leg of the [[No More Tours II]] tour,<ref>{{cite news|title=OZZY OSBOURNE Announces 2019 North American Tour With MEGADETH|url=https://www.blabbermouth.net/news/ozzy-osbourne-announces-2019-north-american-tour-with-megadeth/|work=[[Blabbermouth.net]]|access-date=November 5, 2018}}</ref> which had been postponed from the summer of 2019 to the summer of 2020 due to Osbourne sustaining an injury while dealing with pneumonia. They were replaced by [[Marilyn Manson]] instead.<ref>{{cite news|title=OZZY OSBOURNE To Be Joined By MARILYN MANSON For Rescheduled 2020 North American Dates|url=https://www.blabbermouth.net/news/ozzy-osbourne-to-be-joined-by-marilyn-manson-for-rescheduled-2020-north-american-dates/|work=[[Blabbermouth.net]]|access-date=November 20, 2019|date=November 14, 2018}}</ref> Despite Mustaine's illness, the band vowed to continue working on their new album.<ref>{{cite web|url=https://www.houseofhaironline.com/2019/06/megadeths-dave-mustaine-vows-to-beat-cancer/|author=HOUSE OF HAIR|title=Megadeth's Dave Mustaine Vows To Beat Cancer|website=houseofhaironline.com|date=June 28, 2019|access-date=June 28, 2019}}</ref> On November 6, Mustaine shared a video on [[Instagram]] teasing a track from the band's upcoming album,<ref>{{Cite news|url=http://loudwire.com/megadeth-new-song-tease/|title=Dave Mustaine Teases Heavy + Fast New Megadeth Song – Listen|website=[[Loudwire]]|access-date=November 8, 2018}}</ref> which was originally set for release in 2019.<ref>{{Cite news|url=https://www.loudersound.com/news/megadeth-share-rehearsal-footage-from-new-album-sessions|title=Megadeth share rehearsal footage from new album sessions|website=[[Metal Hammer]]|access-date=November 8, 2018}}</ref> On July 17, Megadeth announced their partnership with [[Gimme Radio]] and [[Richard Childress Racing]] on the No. 2 Gimme Radio [[Chevrolet Camaro]], which was driven by [[Xfinity Series]] driver [[Tyler Reddick]] at the [[New Hampshire 200]] on July 20.<ref>{{cite web |url=https://www.rcrracing.com/news-media/news/2019/07/17/tyler-reddick-megadeth-new-hampshire-gimme-radio/|title=Reddick to Celebrate Metal Band Megadeth with Gimme Radio Chevy in Loudon|website=rcrracing.com|date=July 17, 2019|access-date=July 17, 2019}}</ref> On August 21, the band announced that they would embark on their first tour since Mustaine's illness in January and February 2020, with [[Five Finger Death Punch]] and [[Bad Wolves]] supporting on the European tour.<ref>{{cite news|title=FIVE FINGER DEATH PUNCH To Tour Europe With MEGADETH And BAD WOLVES|url=https://blabbermouth.net/news/five-finger-death-punch-to-tour-europe-with-megadeth-and-bad-wolves/|website=[[Blabbermouth.net]]|access-date=August 21, 2019}}</ref><ref>{{cite news|title=FIVE FINGER DEATH PUNCH Announces Dates For European Tour With MEGADETH, BAD WOLVES|url=https://blabbermouth.net/news/five-finger-death-punch-announces-dates-for-european-tour-with-megadeth-bad-wolves/|website=[[Blabbermouth.net]]|access-date=September 9, 2019}}</ref>

The band was originally scheduled to perform on the first-ever MegaCruise to coincide with the release of the next album,<ref>{{cite news|url=http://www.blabbermouth.net/news/megadeth-announces-first-ever-megacruise/|title=MEGADETH Announces First-Ever 'Megacruise'|website=[[Blabbermouth.net]]|access-date=September 25, 2018}}</ref> due to sail on October 13, 2019, from [[Los Angeles]] and hit ports of [[San Diego]] and [[Ensenada, Baja California|Ensenada]] before returning on October 18, including performances by heavy metal acts such as [[Lamb of God (band)|Lamb of God]], [[Anthrax (American band)|Anthrax]], [[Testament (band)|Testament]], [[Overkill (band)|Overkill]], [[Corrosion of Conformity]], [[Queensrÿche]], [[Armored Saint]], [[Metal Church]], [[Suicidal Tendencies]], [[DragonForce]], [[Doro Pesch|Doro]], [[John 5 (guitarist)|John 5]], [[Death Angel]] and [[Toothgrinder]],<ref>{{cite news|url=http://www.blabbermouth.net/news/anthrax-testament-corrosion-of-conformity-others-confirmed-for-megadeths-first-ever-megacruise/|title=ANTHRAX, TESTAMENT, CORROSION OF CONFORMITY, Others Confirmed For MEGADETH's First-Ever 'Megacruise'|website=[[Blabbermouth.net]]|access-date=October 9, 2018}}</ref><ref>{{cite web|url=https://www.metalinsider.net/news/overkill-and-dragonforce-added-to-first-ever-megacruise|title=Overkill and Dragonforce added to first-ever MegaCruise|website=Metal Insider|date=October 25, 2018|access-date=October 28, 2018}}</ref><ref>{{cite web|last=Trapp|first=Philip|title=Suicidal Tendencies, Queensryche + More Added to 2019 Megacruise|url=https://loudwire.com/suicidal-tendencies-queensryche-megacruise-2019/|website=[[Loudwire]]|date=March 21, 2019|access-date=June 18, 2019}}</ref><ref>{{cite news|title=LAMB OF GOD Added To MEGADETH's 'Megacruise'|url=https://www.blabbermouth.net/news/lamb-of-god-added-to-megadeths-megacruise/|work=[[Blabbermouth.net]]|access-date=August 31, 2020|date=August 6, 2019}}</ref> however, Mustaine was not present due to his illness. It was instead a live performance featuring members of each respective band playing [[Kiss (band)|Kiss]] songs.<ref>{{cite news|url=https://www.blabbermouth.net/news/megadeth-no-official-decision-has-yet-been-made-regarding-dave-mustaines-involvement-in-megacruise/|title=MEGADETH: No Official Decision Has Yet Been Made Regarding DAVE MUSTAINE's Involvement In 'Megacruise'|website=[[Blabbermouth.net]]|access-date=September 21, 2019}}</ref><ref>{{cite news|url=https://www.blabbermouth.net/news/members-of-megadeth-anthrax-testament-death-angel-others-take-part-in-kiss-all-star-jam-on-megacruise-video/|title=Members Of MEGADETH, ANTHRAX, TESTAMENT, DEATH ANGEL, Others Take Part In All-Star KISS Jam On 'Megacruise' (Video)|website=[[Blabbermouth.net]]|access-date=October 19, 2019}}</ref>

[[File:HF2022Megadeth 5.jpg|thumb|left|Bassist [[James LoMenzo]] rejoined Megadeth in 2022, after his replacement David Ellefson was dismissed from the group the previous year.]]
Megadeth was originally scheduled to embark on a co-headlining tour in North America with Lamb of God dubbed "The Metal Tour of the Year" in the summer of 2020, with [[Trivium (band)|Trivium]] and [[In Flames]] as support acts,<ref>{{cite magazine|url=https://www.billboard.com/articles/news/live/8550594/megadeth-lamb-of-god-north-america-2020-tour-dates/|author=Mims, Taylor|title=Megadeth and Lamb Of God Announce North American 2020 Co-Headline Tour|magazine=[[Billboard (magazine)|Billboard]]|access-date=February 10, 2020}}</ref> but was postponed due to the [[COVID-19 pandemic]]. The tour was rescheduled for the summer of 2021,<ref>{{cite news|title=MEGADETH, LAMB OF GOD, TRIVIUM And IN FLAMES Announce 2021 Dates For 'The Metal Tour Of The Year'|url=https://www.blabbermouth.net/news/megadeth-lamb-of-god-trivium-and-in-flames-announce-2021-dates-for-the-metal-tour-of-the-year/|website=[[Blabbermouth.net]]|access-date=July 1, 2020}}</ref> with [[Hatebreed]] replacing In Flames due to the latter being forced to withdraw from the line-up due to international visa issues caused by the pandemic.<ref>{{Cite web|url=https://www.blabbermouth.net/news/hatebreed-replaces-in-flames-on-the-metal-tour-of-the-year/|title=HATEBREED Replaces IN FLAMES On 'The Metal Tour Of The Year'|access-date=July 13, 2021|website=Blabbermouth.net|date=July 13, 2021}}</ref> Megadeth re-entered the studio in Nashville in mid-2020 to resume recording their new album, tentatively planned for release in 2021.<ref>{{cite news|title=DAVID ELLEFSON Will Travel To Nashville This Week To Begin Recording New MEGADETH Album|url=https://blabbermouth.net/news/david-ellefson-will-travel-to-nashville-this-week-to-begin-recording-new-megadeth-album/|website=[[Blabbermouth.net]]|access-date=May 19, 2020}}</ref><ref>{{cite news|title=DAVE MUSTAINE Says New MEGADETH Album Is 'Coming Along Great'|url=https://www.blabbermouth.net/news/dave-mustaine-says-new-megadeth-album-is-coming-along-great/|work=[[Blabbermouth.net]]|access-date=July 25, 2020}}</ref><ref>{{cite news|title=Why MEGADETH Decided Against Recording New Album Remotely|url=https://blabbermouth.net/news/why-megadeth-decided-against-recording-new-album-remotely/|website=[[Blabbermouth.net]]|access-date=July 31, 2020}}</ref> While hosting a Masterclass "Front Row Live" for fans via [[Zoom (software)|Zoom]] on January 9, 2021, Mustaine announced the title of the band's sixteenth album would be called ''[[The Sick, the Dying... and the Dead!]]'', however he indicated that the title might be subject to change.<ref name="Metal Addicts">{{cite web|url=https://metaladdicts.com/site/dave-mustaine-reveals-title-for-new-megadeth-album/|title=Dave Mustane Reveals Title For New Megadeth Album|publisher=Metal Addicts|date=January 10, 2021|access-date=January 11, 2021}}</ref>

In May 2021, sexually explicit videos of Ellefson were leaked to social media. The videos, reportedly recorded by a 19-year-old fan who was in correspondence with Ellefson, led to initial accusations of child grooming. Ellefson and the fan denied these claims in separate statements and maintained their encounters were consensual.<ref name="leak videos">{{cite web |title=Megadeth Comments On Leak Of 'Embarrassing' David Ellefson Videos: 'We Are Watching Developments Closely' |url=https://blabbermouth.net/news/megadeth-comments-on-leak-of-embarrassing-david-ellefson-videos-we-are-watching-developments-closely/ |website=Blabbermouth |date=May 10, 2021 |access-date=May 23, 2021}}</ref> On May 24, Megadeth issued a statement announcing Ellefson's dismissal from the band.<ref>{{cite web |title=MEGADETH Officially Parts Ways With David Ellefson Following Sex Video Scandal|url=https://www.blabbermouth.net/news/megadeth-offically-parts-ways-with-david-ellefson-following-sex-video-scandal/ |website=Blabbermouth |date=May 24, 2021 |access-date=May 24, 2021}}</ref> Ellefson later confirmed that he had actually been dismissed ten days earlier on May 14; the videos originally surfaced on May 10.<ref>{{cite web|url=https://metalinjection.net/news/drama/david-ellefson-was-actually-fired-from-megadeth-four-days-after-sexual-allegations-surfaced-new-details-from-revenge-porn-report|author=Pasbani, Robert|title=David Ellefson Was Actually Fired From Megadeth Four Days After Sexual Allegations Surfaced, New Details From Revenge Porn Report|website=Metal Injection|date=June 9, 2021|access-date=June 9, 2021}}</ref> Following the controversy, Mustaine said there would be no chance for Ellefson to rejoin the band, while Ellefson said he would pursue legal action against the leaked videos.<ref>{{cite web|url=https://www.blabbermouth.net/news/dave-mustaine-says-there-is-no-chance-of-david-ellefson-ever-rejoining-megadeth-again/|title=Dave Mustaine Says There Is No Chance Of David Ellefson Ever Rejoining Megadeth Again|website=[[Blabbermouth.net]]|date=July 13, 2021|access-date=July 13, 2021}}</ref><ref>{{cite web |last1=Kennelty |first1=Greg |title=David Ellefson On Recent Sex Scandal: "There Was Nothing Illegal" |url=https://metalinjection.net/news/drama/david-ellefson-on-recent-sex-scandal-there-was-nothing-illegal |website=Metal Injection |date=October 22, 2021 |access-date=September 13, 2023}}</ref>

On Mustaine's Gimme Radio program ''The Dave Mustaine Show'' on June 17, he said that the bass tracks recorded by Ellefson in May 2020 would not appear on the upcoming album and would be re-recorded by a different bassist,<ref>{{cite web|url=https://www.blabbermouth.net/news/dave-mustaine-confirms-david-ellefson-will-not-appear-on-upcoming-megadeth-album/|title=DAVE MUSTAINE Confirms DAVID ELLEFSON Will Not Appear On Upcoming MEGADETH Album|website=[[Blabbermouth.net]]|date=June 17, 2021|access-date=June 17, 2021}}</ref> which was completed a short time later, but did not say who it was. He also revealed a song title from the album called "The Dogs of Chernobyl".<ref>{{cite web|url=https://www.ultimate-guitar.com/news/general_music_news/dave_mustaine_confirms_david_ellefsons_bass_parts_on_new_megadeth_album_were_already_re-recorded_by_another_bassist.html|author=jomatami|title=Dave Mustaine Confirms David Ellefson's Bass Parts on New Megadeth Album Were Already Re-Recorded By Another Bassist|website=[[Ultimate Guitar]]|access-date=July 8, 2021}}</ref> Mustaine confirmed soon after that a new bassist was chosen with a picture showing the neck of the bass guitar and the unknown member being shown on the floor behind a chair, however, he did not reveal the name, but would announce it soon.<ref>{{cite web|url=https://www.blabbermouth.net/news/heres-the-first-glimpse-of-megadeths-new-bassist/|title=Here's The First Glimpse Of MEGADETH's New Bassist|website=[[Blabbermouth.net]]|date=July 12, 2021|access-date=July 12, 2021}}</ref> Former bassist [[James LoMenzo]] filled in for the band's upcoming tour with Lamb of God,<ref>{{cite web|url=https://www.guitarworld.com/news/megadeth-new-live-bassist|author=Maxwell, Jackson|title=Megadeth announce James LoMenzo as new live bassist|website=[[Guitar World]]|date=August 11, 2021|access-date=August 11, 2021}}</ref> while [[Steve Di Giorgio]] of [[Testament (band)|Testament]] performed as a session bassist on ''The Sick, the Dying... and the Dead!'', which was released in September 2022.<ref>{{cite web|url=https://metaladdicts.com/megadeth-new-album-the-sick-the-dying-and-the-dead-postponed-to-september/|title=Megadeth's New Album, 'The Sick, The Dying... And The Dead', Postponed To September|date=June 12, 2022|access-date=June 12, 2022|work=Metal Addicts}}</ref> LoMenzo was announced as the band's official bassist in May 2022.<ref>{{cite web|url=https://blabbermouth.net/news/megadeth-announces-james-lomenzo-as-permanent-replacement-for-david-ellefson|title=MEGADETH Announces JAMES LOMENZO As 'Permanent' Replacement For David Ellefson|website=[[Blabbermouth.net]]|date=May 31, 2022|access-date=May 31, 2022}}</ref>

After several teasers,<ref>{{Cite web |date=June 21, 2022 |title=Megadeth tease new music on mysterious website|url=https://www.loudersound.com/news/megadeth-tease-new-music-on-mysterious-website|access-date=June 23, 2022 |website=loudersound |language=en}}</ref> "[[We'll Be Back]]", the first single from the record, was released on June 23,<ref>{{Cite web |last=Trapp |first=Todd FooksTodd FooksContributing Authors: Philip|title=Fans React to Megadeth's New Song 'We'll Be Back'|url=https://loudwire.com/megadeth-new-song-well-be-back-reactions-fans-listeners/ |access-date=June 23, 2022 |website=Loudwire |date=June 23, 2022 |language=en}}</ref> along with the tracklist, followed by next singles "Night Stalkers" and "[[Soldier On!]]", released on July 22<ref>{{cite web|url=https://www.guitarworld.com/news/megadeth-ice-t-night-stalkers|title=Megadeth join forces with Ice-T for pummeling new single, Night Stalkers|work=[[Guitar World]]|date=July 22, 2022|access-date=September 3, 2022}}</ref> and August 12<ref>{{cite web|url=https://ultimateclassicrock.com/megadeth-soldier-on|title=Megadeth Unleash New Single 'Soldier On'|website=[[Ultimate Classic Rock]]|date=August 12, 2022|access-date=September 3, 2022}}</ref> respectively.

In November 2022, the band released a cover of a [[Judas Priest]] song titled "Delivering The Goods" from their 1978 album, ''[[Killing Machine]].''<ref>{{Cite web |last=Kennelty |first=Greg |date=February 21, 2023|access-date=May 15, 2025|title=MEGADETH Streams Cover Of JUDAS PRIEST's "Delivering The Goods" |url=https://metalinjection.net/new-music/megadeth-streams-cover-of-judas-priests-delivering-the-goods |website=Metal Injection}}</ref>

On February 27, 2023, Megadeth was joined by former guitarist Marty Friedman where they performed three songs at the Budokan in Japan. This marked Friedman's first performance with the band since 2000.<ref>{{cite web|url=https://guitar.com/news/music-news/marty-friedman-megadeth-reunion-japan/|title=Watch: Marty Friedman reunites with Megadeth onstage for the first time in 23 years|website=[[Guitar.com]]|date=February 28, 2023|access-date=May 19, 2023}}</ref> On June 23, former drummer [[Lee Rausch]] died at the age of 58.<ref>{{cite web|url=https://blabbermouth.net/news/former-megadeth-drummer-lee-rauch-dies|title=Former MEGADETH Drummer LEE RAUCH Dies|website=[[Blabbermouth.net]]|date=June 25, 2023}}</ref> Friedman made another guest appearance with the band at [[Wacken Open Air]] in August 2023.<ref>{{cite web|url=https://loudwire.com/marty-friedman-surprise-appearance-megadeth-wacken-open-air-2023/|title=Marty Friedman Makes Surprise Appearance With Megadeth for 4 Songs During Wacken Open Air Festival|first=Lauryn|last=Schaffner|work=[[Loudwire]]|date=August 4, 2023|access-date=August 26, 2025}}</ref>

===2023–present: Kiko Loureiro's departure, ''Megadeth'' and farewell tour===

On September 6, 2023, it was announced that lead guitarist [[Kiko Loureiro]] would temporarily be leaving the North American portion of the tour and that he would be replaced by [[Teemu Mäntysaari]].<ref>{{cite magazine|url=https://www.rollingstone.com/music/music-news/megadeth-kiko-loureiro-pulls-out-tour-temporary-replacement-announced-1234819072/|title=Megadeth's Kiko Loureiro Pulls Out of Tour, Temporary Replacement Announced|magazine=[[Rolling Stone]]|first=Charisma|last=Madarang|date=September 6, 2023|access-date=November 25, 2023}}</ref> On November 20, 2023, Mäntysaari joined Megadeth as their lead guitarist, after Loureiro announced he would be extending his absence from the band.<ref>{{Cite web |date=November 20, 2023 |title=DAVE MUSTAINE: We Will Move Forward With TEEMU MÄNTYSAARI As Guitar Player For MEGADETH|url=https://blabbermouth.net/news/dave-mustaine-we-will-move-forward-with-teemu-maantysari-as-guitar-player-for-megadeth |access-date=November 25, 2023|website=[[Blabbermouth.net]] |language=en}}</ref> Loureiro later confirmed in a November 28, 2023, podcast interview that he would be permanently leaving the band.<ref>{{cite web|url=https://blabbermouth.net/news/kiko-loureiro-opens-up-about-decision-to-leave-megadeth |title=KIKO LOUREIRO Opens Up About His Decision To Leave MEGADETH |date=November 29, 2023|access-date=November 30, 2023|work=[[Blabbermouth.net]]}}</ref> Loureiro explained his departure in a January 2024 interview with ''[[Guitar World]]'', saying: "I had two viable options: to be in Megadeth or not. I chose my personal life. No regrets."<ref>{{Cite web|first=Andrew|last=Daly |date=January 10, 2024 |title="I had two viable options: to be in Megadeth or not. I chose my personal life. No regrets": Kiko Loureiro opens up on what he meant by "freedom," how he trained up his replacement, and why he suggested Marty Friedman should return |url=https://www.guitarworld.com/features/kiko-loureiro-megadeth-departure |access-date=May 20, 2024 |website=[[Guitar World]] |language=en}}</ref>

On August 14, 2025, Megadeth announced their upcoming studio album, which is set to be their final album, alongside the news of a farewell tour in 2026.<ref>{{Cite web |last=Hadusek |first=Jon |date=August 14, 2025 |title=Megadeth to Release Final Album and Embark on Farewell World Tour in 2026 |url=https://consequence.net/2025/08/megadeth-final-album-farewell-tour-2026/ |access-date=August 14, 2025 |website=Consequence |language=en}}</ref> Early bassist [[David Ellefson]] expressed interest in taking part of the final tour, saying: "I don't even know if [Mustaine is] retiring. He's just basically saying Megadeth's over...Would I like to be a part of it? Yeah, of course. Who wouldn't? I'm a founding member of it. I'm a 30-plus-year member of it."<ref>{{cite web|url=https://blabbermouth.net/news/david-ellefson-admits-he-would-like-to-be-part-of-megadeths-farewell-tour-im-a-founding-member-of-it |title=DAVID ELLEFSON Admits He 'Would Like' To Be Part Of MEGADETH's Farewell Tour: 'I'm A Founding Member Of It' |date=August 22, 2025 |access-date=August 27, 2025 |work=[[Blabbermouth.net]]}}</ref>{{efn| Ellefson has stated in a previous interview that he was "in the room" when the band was founded.<ref name=blabfeb6/>}} The first single from the upcoming album, "[[Tipping Point (song)|Tipping Point]]", was released on October 3, 2025.<ref>{{cite web|url=https://blabbermouth.net/news/megadeth-to-release-new-single-tipping-point-next-week-teaser-now-available|title=MEGADETH To Release New Single 'Tipping Point' Next Week; Teaser Available|work=[[Blabbermouth.net]]|date=September 25, 2025|access-date=October 2, 2025}}</ref> The title of the final studio album was revealed at the same time as ''[[Megadeth (album)|Megadeth]]'', the eponymous name as the band, with a release date of January 23, 2026.<ref>{{cite web |last1=DeVille |first1=Chris |title=Megadeth Detail Final Album, Share "Tipping Point" |url=https://www.stereogum.com/2325267/megadeth-detail-final-album-share-tipping-point/music/ |website=Stereogum |access-date=October 5, 2025 |language=en |date=October 3, 2025}}</ref> The band performed "Tipping Point" live for the first time on October 14 during the band's European tour as the support act for [[Disturbed (band)|Disturbed]].<ref>https://blabbermouth.net/news/watch-megadeth-performs-new-single-tipping-point-live-for-first-time</ref>

As part of their final tour promoting the album, the band, along with [[Anthrax (American band)|Anthrax]], will serve as one of the supporting acts for the North American leg of [[Iron Maiden]]'s [[Run for Your Lives World Tour]] in the fall of 2026.<ref>{{Cite web |date=October 23, 2025 |title=IRON MAIDEN Announces 2026 North American Tour With MEGADETH And ANTHRAX |url=https://blabbermouth.net/news/iron-maiden-announces-2026-north-american-tour-with-megadeth-and-anthrax |access-date=October 24, 2025 |website=[[Blabbermouth.net]] |language=en}}</ref> Mustaine later stated on November 12, 2025, that their final tour is set to run for 'three to five' years.<ref>{{cite web |title=Megadeth: "The body will disappear, but the legend will remain. And the music will go on forever" |url=https://www.kerrang.com/megadeth-dave-mustaine-farewell-interview-thrash-metal-cover-story |website=Kerrang! |access-date=November 12, 2025 |language=en |date=November 12, 2025}}</ref>

==Controversies==
Mustaine has made numerous inflammatory statements in the press,<ref>{{cite web|last=Crawford|first=Allyson B.|title=Megadeth Frontman Dave Mustaine's Most Controversial Quotes|url=http://noisecreep.com/dave-mustaine-quotes/|website=[[Noisecreep]]|date=April 5, 2012|access-date=November 21, 2013}}</ref> usually regarding issues with former Metallica bandmates. The feud stemmed from his ejection from the band, how it was conducted, and disagreements on songwriting credits.<ref>{{cite web|last=Hartmann|first=Graham|title=Metallica vs. Dave Mustaine&nbsp;– Nastiest Rock Feuds|url=http://loudwire.com/metallica-vs-dave-mustaine-nastiest-rock-feuds/|work=[[Loudwire]]|date=August 31, 2012|access-date=November 21, 2013}}</ref> Mustaine expressed his anger in the movie ''[[Metallica: Some Kind of Monster]]''<ref>{{cite magazine|last=Hay|first=Carla|title="Monster" Film Reveals Metallica's Dynamics|magazine=[[Billboard (magazine)|Billboard]]|date=January 17, 2004|volume=116|page=15|url=https://books.google.com/books?id=gg8EAAAAMBAJ&q=dave+mustaine+fired+metallica&pg=PA15|access-date=November 21, 2013}}</ref> in a scene he later disapproved of as he felt he was mischaracterized, and that it did not represent the full extent of what happened during the meeting.<ref>{{cite web|last=Wiederhorn|first=Jon|title=Megadeth Frontman, Filmmakers At Odds Over Metallica Doc|url=http://www.mtv.com/news/1489539/megadeth-frontman-filmmakers-at-odds-over-metallica-doc/|archive-url=https://web.archive.org/web/20140524093031/http://www.mtv.com/news/1489539/megadeth-frontman-filmmakers-at-odds-over-metallica-doc/|url-status=dead|archive-date=May 24, 2014|publisher=[[MTV]]|date=July 20, 2004|access-date=November 21, 2013}}</ref>

During a live performance of "Anarchy in the U.K." at a 1988 show in [[Antrim (borough)|Antrim]], [[Northern Ireland]], Mustaine dedicated the song to "the cause."{{efn|Before the show in Antrim, Mustaine discovered that [[counterfeit|bootlegged]] Megadeth T-shirts were on sale in the venue. The seller explained to Mustaine that he was raising money for "[[Provisional Irish Republican Army|The Cause]]". Mustaine felt supportive of the idea and unknowingly dedicated the last song to the organization.}} Before the final song, Mustaine said, "This one's for the cause! Give Ireland back to the Irish!"<ref name="Rust">{{cite web|first=Richard |last=Bienstock |title=Megadeth: Rust Never Sleeps |url=https://www.guitarworld.com/features/megadeth-rust-never-sleeps |work=[[Guitar World]] |date=September 17, 2010 |access-date=November 22, 2013}}</ref> The quote was inspired by [[Paul McCartney]]'s song "[[Give Ireland Back to the Irish]]".<ref>{{cite web|first=Kenny|last=Herzog|title=Dave Mustaine Interview|url=https://www.avclub.com/article/dave-mustaine-59091|work=[[The A.V. Club]]|date=July 18, 2011|access-date=June 4, 2014}}</ref> This elicited a riot and fighting among the audience between [[Irish people|Irish Nationalists]], the majority of whom are [[Catholic Church|Catholic]], and the predominantly [[Protestantism|Protestant]], [[Unionism in Ireland|British Unionists]] in attendance. The band had to travel in a bulletproof bus back to [[Dublin]].<ref name="Metal Sludge">{{cite web|author=Metal Sludge staff|title=23 Questions With Dave Mustaine|url=http://www.metalsludge.tv/?p=28520|publisher=Metal Sludge|date=September 4, 2001|access-date=December 10, 2013|url-status=dead|archive-url=https://web.archive.org/web/20131213140143/http://www.metalsludge.tv/?p=28520|archive-date=December 13, 2013}}</ref> This incident served as inspiration for the song "[[Holy Wars... The Punishment Due]]".<ref>{{cite magazine|title=Holy Wars...The Punishment Due|url=https://www.rollingstone.com/music/song-stories/holy-wars-the-punishment-due-megadeth|magazine=[[Rolling Stone]]|access-date=December 6, 2013|url-status=dead|archive-url=https://web.archive.org/web/20140309221717/http://www.rollingstone.com/music/song-stories/holy-wars-the-punishment-due-megadeth|archive-date=March 9, 2014}}</ref>

Controversial or misinterpreted lyrics have caused complications for the band. In 1988, [[MTV]] deemed that the song "[[In My Darkest Hour]]" encouraged suicide and banned the video.<ref>{{cite web|first=Laura|last=Mann|title=The Ten Best Music Videos Banned by MTV|url=http://blogs.dallasobserver.com/dc9/2011/08/the_ten_best_videos_banned_by.php|work=[[Dallas Observer]]|date=August 1, 2011|access-date=November 22, 2013|archive-date=May 13, 2015|archive-url=https://web.archive.org/web/20150513182039/http://blogs.dallasobserver.com/dc9/2011/08/the_ten_best_videos_banned_by.php|url-status=dead}}</ref> The station banned the video for "[[A Tout le Monde]]" for the same reason, though Mustaine said the song was written from the perspective of a dying man saying his last words to his loved ones.<ref name="A Tout le Monde"/> According to him, MTV considered the videos for "[[Skin o' My Teeth]]" and "[[Symphony of Destruction]]" a "little bit too harsh" and refused to play them.<ref>{{cite journal|first=Anna Lisa|last=Pessin|title=Dressed for Success|journal=[[Spin (magazine)|Spin]]|date=October 1992|volume=8|page=52|url=https://books.google.com/books?id=wJumg6TLv8EC&q=countdown+to+extinction+thrash+metal&pg=PT53|access-date=September 20, 2013}}</ref>

During a world tour in 2001, the Malaysian government canceled the band's show in the nation's capital because the authorities had a negative perception of the group's image and music.<ref>{{cite magazine|first=Barry A.|last=Jeckell|title=Billboard Bits: LL Cool J, Megadeth, Money Mark|url=https://www.billboard.com/articles/news/79013/billboard-bits-ll-cool-j-megadeth-money-mark|magazine=[[Billboard (magazine)|Billboard]]|date=August 6, 2001|access-date=December 13, 2013}}</ref> The government deemed the band's mascot, Vic Rattlehead, as inappropriate and told the members that they would be arrested if they performed.<ref>{{cite web|title='Hero' Takes A Fall In Malaysia|url=https://www.nme.com/news/megadeth/8697|work=[[New Musical Express]]|date=July 24, 2001|access-date=December 13, 2013}}</ref> Dave Mustaine responded: "I recognize what the Malaysian government is trying to do, and it is admirable of them trying to protect the young people in the country. But it just shows the degree of ignorance and apathy that the government has toward the problem."<ref name="Vegas Sun"/>

In 2003, after recovering from an arm injury that threatened to end his career, Mustaine became a [[born again|born-again]] Christian.<ref>{{cite web|first=George|last=Stroumboulopoulos|publisher=[[CBS]]|title=Interview: Dave Mustaine|url=http://www.cbc.ca/strombo/guests/dave-mustaine|access-date=November 22, 2013}}</ref> Minor controversy was sparked by Mustaine's announcement that Megadeth would not play certain songs live due to his conversion.<ref>{{cite news|last=Prince|first=Patrick|title=Dave Mustaine at 'Peace' in his career, 25 years later|url=http://www.goldminemag.com/features/dave-mustaine-at-peace-in-his-career-25-years-later|work=[[Goldmine (magazine)|Goldmine]]|date=June 13, 2011|access-date=November 22, 2013}}</ref> In May 2005, Mustaine allegedly threatened to cancel shows in Greece and Israel with [[extreme metal]] bands [[Rotting Christ]] and [[Dissection (band)|Dissection]] due to the bands' anti-Christian beliefs. This caused the two bands to cancel appearances.<ref>{{cite web|last=Kerby|first=Jeff|title=Dave Mustaine Speaks to KNAC.com From Gigantour| date=July 24, 2005|url=http://www.knac.com/article.asp?ArticleID=3761|publisher=[[KNAC.com]]|access-date=November 22, 2013}}</ref>

{{Wikisource|David Ellefson v Megadeth}}
In July 2004, former bassist Ellefson sued Mustaine for $18.5 million in the [[United States District Court for the Southern District of New York]]. Ellefson alleged that Mustaine short-changed him on profits including tour merchandise and publishing royalties.<ref>{{cite magazine|magazine=[[Billboard (magazine)|Billboard]]|title=Megadeth Founders Exchange Lawsuits|date=August 9, 2004|url=https://www.billboard.com/biz/articles/news/1430579/megadeth-founders-exchange-lawsuits|access-date=November 22, 2013}}</ref> The suit was dismissed in 2005, and Mustaine filed a countersuit alleging that Ellefson had used the band's name in an advertisement for musical equipment;<ref>{{cite magazine|title=Megadeth's Mustaine Sues Former Bassist|url=https://www.billboard.com/articles/news/61979/megadeths-mustaine-sues-former-bassist|magazine=[[Billboard (magazine)|Billboard]]|date=July 26, 2005|access-date=June 4, 2014}}</ref> the suit was settled out of court.<ref>{{cite web|first=Jon|last=Wiederhorn|website=[[Noisecreep]]|title=Megadeth Frontman Extends Olive Branch to Original Bassist|date=February 10, 2010|url=http://noisecreep.com/megadeth-dave-mustaine-olive-branch-dave-ellefson/|access-date=November 22, 2013}}</ref>

On May 10, 2021, sexually explicit videos of Ellefson were posted on Twitter. The videos, reportedly recorded by a fan that Ellefson was in correspondence with, initially led to accusations of child grooming. However, Ellefson and the other party both denied the accusations, and the fan publicly claimed they were a consenting adult and the videos were unknowingly released by a third party. The Scottsdale Police Department (SPD) was contacted by Ellefson, who sought charges for revenge porn. Ellefson took a polygraph test to affirm his claims and presented police with a photo of the fan's driver's license to prove their age. He also shared screen shots of Snapchat and WhatsApp messages related to the allegations. Ellefson's partner admitted that she had shared the video with some friends but wasn't sure how it got leaked out to others. The SPD report states the fan "was remorseful and agreed to send out a social media statement on...Instagram" that they were "a willing consenting adult during their mutual virtual sexual encounter." Ellefson then posted her statement and one of his own on May 10, asserting that the allegations of grooming were false. Ellefson stated he has not been extorted in any way, and he believes the videos of their consensual adult encounter were not intentionally leaked.<ref>{{Cite magazine|last1=Grow|first1=Kory|date=June 7, 2021|title=David Ellefson: Ex-Megadeth Bassist Details Revenge-Porn Case in Police Report|url=https://www.rollingstone.com/music/music-news/david-ellefson-megadeth-bassist-revenge-porn-police-report-1179919/|access-date=January 16, 2022|magazine=Rolling Stone|language=en-US}}</ref> An official statement released the next day from Megadeth stated that the situation was being "watched closely".<ref name="leak videos" /> Mustaine announced on May 24, 2021, that Ellefson was fired from the band.<ref>{{cite web |url=https://variety.com/2021/music/news/megadeth-david-ellefson-fires-sexual-misconduct-1234980355/ |title=Megadeth Fires Bassist David Ellefson After Sexual Misconduct Allegations |author=Jordan Moreau |date=May 24, 2021 |website=Variety |access-date=May 24, 2021 |quote=Heavy metal band Megadeth has parted ways with bassist David Ellefson after he was accused of sexual misconduct.}}</ref>

==Artistry==

=== Musical style and instrumentation ===
Megadeth are a [[thrash metal]] band. They have also been categorized as [[speed metal]]. According to Philip Trapp of ''[[Loudwire]]'', the band were erroneously labeled as a [[death metal]] band by ''[[The New York Times]]'' in 1990. He said: "Now, Megadeth can most certainly be associated with the rise of speed metal, seeing as how the [band] did their best to top Metallica's top speed in the '80s. But perhaps in trying to purposely distill heavy metal's elements down too much, the ''Times'' threw too many genre tags at too wide an assortment of metal bands."<ref>{{Cite web |last=Trapp |first=Philip TrappPhilip |date=November 1, 2023 |title=10 Times Bands Were Wrongly Accused of Being Death Metal |url=https://loudwire.com/bands-wrongly-called-death-metal/ |access-date=August 19, 2025 |website=Loudwire |language=en}}</ref>

Mustaine is the band's primary songwriter. He develops songs starting with a particular riff that, with modifications, becomes the central part of the song.<ref>{{cite web|last=Sharken|first=Lisa|title=Dave Mustaine of Megadeth|url=http://www.seymourduncan.com/blog/artist-interview/dave-mustaine-of-megadeth/|work=Seymour Duncan|date=January 9, 2007|access-date=December 3, 2013}}</ref> He has said that song fragments are composed separately, and then the band makes a compact structure from them.<ref>{{cite web|last=Bosso|first=Joe|title=Interview: Megadeth's Dave Mustaine talks Thirteen, Metallica and riffs|url=http://www.musicradar.com/news/guitars/interview-megadeths-dave-mustaine-talks-th1rt3en-metallica-and-riffs-519610|publisher=[[MusicRadar]]|date=December 14, 2011|access-date=December 3, 2013}}</ref> Drummer Shawn Drover stated that Mustaine had saved many riffs over the years and that some recent material is based on those demo recordings.<ref name="Drover">{{cite web|last=Toto|first=Anthony|title=Interview: Megadeth|url=http://pop-break.com/2013/11/29/interview-megadeth/|work=Pop-Break|date=November 29, 2013|access-date=December 7, 2013|archive-url=https://web.archive.org/web/20131210235912/http://pop-break.com/2013/11/29/interview-megadeth/|archive-date=December 10, 2013|url-status=dead}}</ref> Ellefson stated that the band constantly creates new material, and that making a recording begins with exchanging ideas after which the band enters the studio and discusses the concept, direction, artwork, and song titles.<ref>{{cite web|last=Wise|first=Lauren|title=Megadeth's Dave Ellefson: "All The Best Things In My Life Were Not My Idea"|url=http://blogs.phoenixnewtimes.com/uponsun/2013/10/dave-ellefson-interview-megadeth-book.php?page=3|work=[[Phoenix New Times]]|date=October 28, 2013|access-date=December 16, 2013|archive-date=December 15, 2013|archive-url=https://web.archive.org/web/20131215121253/http://blogs.phoenixnewtimes.com/uponsun/2013/10/dave-ellefson-interview-megadeth-book.php?page=3|url-status=dead}}</ref> The lyrics are usually written after the music is arranged.<ref>{{cite web|last=Chamberlain|first=Rich|title=Dave Mustaine on Super Collider, Endgame, Risk and more|url=http://www.musicradar.com/news/guitars/dave-mustaine-on-super-collider-endgame-risk-and-more-575401/2|publisher=[[MusicRadar]]|date=June 3, 2013|access-date=July 11, 2014|archive-date=December 23, 2014|archive-url=https://web.archive.org/web/20141223162322/http://www.musicradar.com/news/guitars/dave-mustaine-on-super-collider-endgame-risk-and-more-575401/2|url-status=dead}}</ref> Discussing the band's lyrics, Mustaine said that many of the themes are derived from literature, such as the novels of [[George Orwell]].<ref>{{cite web|last=Ruggiero|first=Bob|title=Megadeth's Dave Mustaine Hopes You're Still Buying|url=http://blogs.houstonpress.com/rocks/2013/12/_when_megadeth_foundersingergu.php|work=[[Houston Press]]|date=December 11, 2013|access-date=December 15, 2013|archive-date=October 21, 2014|archive-url=https://web.archive.org/web/20141021135714/http://blogs.houstonpress.com/rocks/2013/12/_when_megadeth_foundersingergu.php|url-status=dead}}</ref>

The music of Megadeth and its underground metal contemporaries from the 1980s featured harsh vocals, [[double bass drum]] patterns, [[staccato]] riffing, [[power chords]], [[tremolo picking]], and screeching lead guitar work; albums from this period were produced on low budgets.{{sfn|Purcell|2003|p=53}} After forming Megadeth, Mustaine followed the thrash metal style of his previous band, Metallica, with more emphasis on speed and intensity.<ref>{{cite magazine|title=Megadeth Biography|url=https://www.rollingstone.com/music/artists/megadeth/biography|archive-url=https://web.archive.org/web/20110210231402/http://www.rollingstone.com/music/artists/megadeth/biography|url-status=dead|archive-date=February 10, 2011|magazine=[[Rolling Stone]]|publisher=[[Simon & Schuster]]|year=2001|access-date=November 22, 2013}}</ref> When asked to describe Megadeth's guitar style, Mustaine answered: "When you go to a show and see a guitar player who just stands there, that's a guitar player. A thrash guitar player is a guy who plays like he wants to beat the guitar's guts out."<ref name="Chicago"/> Most of the songs are recorded in standard [[guitar tuning]] as Mustaine believes it to provide a superior melody to alternative methods of tuning.<ref>{{cite web|last=Bienstock|first=Richard|title=Interview: Megadeth Guitarist Dave Mustaine on 2009's 'Endgame'|url=https://www.guitarworld.com/interview-megadeth-guitarist-dave-mustaine-2009s-endgame|work=[[Guitar World]]|date=January 17, 2013|access-date=December 15, 2013|archive-url=https://web.archive.org/web/20131205082523/http://www.guitarworld.com/interview-megadeth-guitarist-dave-mustaine-2009s-endgame|archive-date=December 5, 2013|url-status=dead}}</ref>
In 2017, David Ellefson talked in an interview about how the band recently started to use a lower tuning saying: "it's just natural with age, for singers it can be a struggle, so rather than quit, than not play, how do you work it around? Well, let's drop the guitars, let's find a way to work around it."<ref>{{cite web|last=Sciaky|first=Davide|title=Interview: Megadeth (David Ellefson)|url=http://www.truemetal.it/news/intervista-megadeth-david-ellefson-91978-p2|work=[[TrueMetal.it]]|date=August 17, 2017|access-date=January 14, 2018|archive-url=https://web.archive.org/web/20181012014552/http://www.truemetal.it/news/intervista-megadeth-david-ellefson-91978-p2|archive-date=October 12, 2018|url-status=dead}}</ref>

During the band's early days, Mustaine was the rhythm guitarist, while Chris Poland played lead. Poland performed only on Megadeth's first two albums at the time of the book's release; (he would go on to play on the 2004 album ''[[The System Has Failed]]''); music journalists Pete Prown and Harvey P. Newquist credit him with making the music more colorful because of his [[jazz]] influences.{{sfn|Prown|Newquist|1997|p=227}} According to former ''[[Metal Maniacs]]'' editor Jeff Wagner, the band's songwriting techniques peaked with the fourth album, ''Rust in Peace'', which he described as a "flurry of precision and fluidity, making good on Megadeth's claim to being the world's state-of-the-art [[speed metal]] band".{{sfn|Wagner|2010|p=43}} Musicologist Glenn Pillsbury stated the guitar work on the album was a mixture of Mustaine's "controlled chaos" and the "technical brilliance" of Marty Friedman.{{sfn|Pillsbury|2006|p=82}} Studio efforts released in the mid- and late 1990s featured songs with compact structures and less complicated riffing.<ref>{{cite magazine|url=https://books.google.com/books?id=tQ0EAAAAMBAJ&q=megadeth+cryptic+writings&pg=PA84|access-date=November 22, 2013|last=Michael Moses|first=Dan Kaye|title=What Did You Do In The War, Daddy?|magazine=[[Billboard (magazine)|Billboard]]|page=12|date=June 5, 1999}}</ref>

=== Lyrical themes ===
Megadeth's lyrics often focus on death, war, politics, and religion.{{sfn|Arnett|1996|p=44}} The lyricism centers on nihilistic themes, but occasionally deals with topics such as alienation and social problems.{{sfn|Joyner|2002|p=301}} The earliest releases featured themes such as occultism, graphic violence, and Satanism.<ref name="Popmatters" /><ref>{{cite journal|last=Powell|first=Mike|title=Diggin' In the Crates For Untold Treasures|journal=[[Spin (magazine)|Spin]]|date=September 2011|volume=27|page=92|url=https://books.google.com/books?id=0wtKHa9tu6QC&q=megadeth+poetry+about+satan&pg=PA92|access-date=November 21, 2013}}</ref> [[Nuclear warfare]] and government conspiracy were preoccupations on albums such as ''Rust in Peace'' and ''Countdown to Extinction''.{{sfn|Harrison|2011|p=60}} During Megadeth's commercial peak, Mustaine elaborated on more personal themes such as addiction and intimate relationships. For the lyrics on ''Cryptic Writings'', Mustaine said that he wanted to write songs that had more appeal to a wider audience.<ref>{{cite magazine|url=https://books.google.com/books?id=5AkEAAAAMBAJ&q=megadeth+cryptic+writings&pg=PA74|access-date=November 21, 2013|last=Taylor|first=Chuck|title=Metal Mainstay Megadeth Alters Its Lyrics But Not Its Music For The '90s|magazine=[[Billboard (magazine)|Billboard]]|page=74|date=November 29, 1997}}</ref> The title of ''United Abominations'' is a satiric play on the name of the [[United Nations]]; Mustaine criticized the organization's ineffectiveness on a number of songs on that album.{{sfn|Phillips|Cogan|2009|p=157}}

===Influences===
Traditional [[heavy metal music|heavy metal]] bands such as [[UFO (band)|UFO]], [[Black Sabbath]], [[Budgie (band)|Budgie]], [[Judas Priest]],<ref>{{cite web |last=Grow |first=Kory |date=August 3, 2010 |title=Exclusive Excerpt From Dave Mustaine's Autobiography: Meeting Lars Ulrich |url=http://www.revolvermag.com/uncategorized/exclusive-excerpt-from-dave-mustaines-autobiography-meeting-lars-ulric.html |archive-url=https://web.archive.org/web/20151120220741/http://www.revolvermag.com/uncategorized/exclusive-excerpt-from-dave-mustaines-autobiography-meeting-lars-ulric.html |archive-date=November 20, 2015 |work=Revolver |publisher=NewBay Media}}</ref> [[new wave of British heavy metal]] (NWOBHM) bands such as [[Raven (British band)|Raven]],<ref>{{cite web |date=March 7, 2022 |title=Raven's debut album 'Rock Until You Drop' getting released as 'The 4CD Over The Top Edition' |url=https://sleazeroxx.com/ravens-debut-album-rock-until-you-drop-getting-released-as-the-4cd-over-the-top-edition/ |access-date=March 7, 2022 |publisher=sleazeroxx.com}}</ref> [[Angel Witch]], [[Motörhead]], [[Iron Maiden]], [[Diamond Head (English band)|Diamond Head]], and [[Venom (band)|Venom]], and [[punk rock]] bands such as the [[Sex Pistols]] and [[Ramones]] had a significant influence on Megadeth's sound.<ref>{{cite news |last=Smyers |first=Darryl |date=March 1, 2012 |title=Megadeth's Dave Ellefson Talks About Christianity and Lady Gaga |url=http://blogs.dallasobserver.com/dc9/2012/03/megadeths_dave_ellefson_talks.php |url-status=dead |archive-url=https://web.archive.org/web/20131203013034/http://blogs.dallasobserver.com/dc9/2012/03/megadeths_dave_ellefson_talks.php |archive-date=December 3, 2013 |access-date=November 23, 2013 |newspaper=[[Dallas Observer]]}}</ref> [[Hard rock]] bands such as [[AC/DC]],<ref>{{cite web |author=Full Metal Jackie |date=October 7, 2013 |title=Megadeth Frontman Dave Mustaine on Touring With Iron Maiden, Social Media + More |url=http://loudwire.com/megadeth-dave-mustaine-touring-iron-maiden-social-media-more/ |access-date=November 23, 2013 |work=[[Loudwire]]}}</ref> [[Queen (band)|Queen]],<ref>{{Cite web |date=March 16, 2016 |title=The Quietus &#124; Features &#124; Baker's Dozen &#124; Th1rt3en Best: Dave Mustaine of Megadeth's Favourite Albums |url=https://thequietus.com/articles/19891-dave-mustaine-megadeth-favourite-albums-interview?page=12}}</ref> [[Led Zeppelin]],{{sfn|Edmondson|2013|p=147}} and [[Rush (band)|Rush]],<ref>{{cite news |last=Kot |first=Greg |date=November 1, 1991 |title=Rush Still Feels No Special Need To Hurry |url=http://www.2112.net/powerwindows/transcripts/19911101chicagotribune.htm |access-date=May 25, 2024 |newspaper=[[Chicago Tribune]]}}</ref> as well as European acts like [[Scorpions (band)|Scorpions]],<ref>{{Cite web |date=January 29, 2019 |title=10 Bands Who Influenced Megadeth |url=https://loudwire.com/bands-who-influenced-megadeth/ |website=[[Loudwire]]}}</ref> [[Accept (band)|Accept]],<ref>{{cite web |date=February 2021 |title=B-Mac Album Review: Accept, Too Mean To Die ~ Uncivil Revolt |url=http://www.uncivilrevolt.com/2021/02/b-mac-album-review-accept-too-mean-to-die/ |url-status=dead |archive-url=https://web.archive.org/web/20220407034003/http://www.uncivilrevolt.com/2021/02/b-mac-album-review-accept-too-mean-to-die/ |archive-date=April 7, 2022 |access-date=February 8, 2021 |publisher=uncivilrevolt.com}}</ref> and [[Mercyful Fate]],<ref>{{cite magazine |last=Weiderhorn |first=Jon |date=June 1998 |title=Last Men Standing |magazine=Maximum Guitar |pages=29}}</ref> were also influential on the group's guitar style. Although the music has roots in punk,{{sfn|Dika|2012|p=188}} university professor Jason Bivins wrote that Megadeth followed the basic blueprint of Motörhead and Iron Maiden. He described the style as a mix of "the instrumental virtuosity of the NWOBHM with the speed and aggression of [[hardcore punk]]", while also drawing lyrical inspiration from the horror-themed punk band [[Misfits (band)|Misfits]].{{sfn|Bivins|2008|p=74}} Mustaine has also listed albums by [[the Beatles]] and [[David Bowie]] as recordings that influenced him.<ref>{{cite web |last=Carney |first=Christine |date=September 18, 2007 |title=Megadeth's Mustaine Talks About Albums That Influenced Him; |url=http://www.blabbermouth.net/news/megadeth-s-mustaine-talks-about-albums-that-influenced-him-video-available/ |access-date=November 26, 2013 |work=[[MP3.com]] |publisher=[[Blabbermouth.net]]}}</ref>

== Legacy ==
Having sold more than 50 million units worldwide, Megadeth is one of the few bands from the 1980s American underground metal scene to have achieved mass commercial success.<ref name="auto"/> Along with contemporaries Metallica, Slayer, and Anthrax, Megadeth is regarded as one of the core founding groups of thrash metal.{{sfn|Thompson|2007|p=135}} These bands are often referred to as the "big four" of thrash metal,{{sfn|Phillips|Cogan|2009|p=210}} responsible for the genre's development and popularization. ''[[Loudwire]]'' ranked Megadeth the third best thrash metal band of all time, praising the group's "provoking lyrics and mind-warping virtuosity".<ref>{{cite web|last=Rivadavia|first=Eduardo|title=10 Best Thrash Metal Bands of All Time|url=http://loudwire.com/best-thrash-metal-bands/|work=[[Loudwire]]|date=August 15, 2013|access-date=November 24, 2013}}</ref> ''CMJ New Music Report'' called the band's debut album a seminal release and a representative of "the golden age of speed metal".<ref>{{cite journal|author=CMJ Network, Inc|title=Loud Rock|journal=[[CMJ New Music Report]]|date=February 11, 2002|page=45|url=https://books.google.com/books?id=Y7cms1PnqKUC&q=killing+is+my+business&pg=PT13|access-date=November 24, 2013}}</ref> [[Billboard (magazine)|Billboard]] called the band's second album ''Peace Sells... but Who's Buying?'' a "landmark of the thrash movement" whose lyrics it found still relevant.<ref>{{cite magazine|last=Paoletta|first=Michael|title=Vital Reissues|magazine=[[Billboard (magazine)|Billboard]]|date=August 14, 2004|page=45|url=https://books.google.com/books?id=8RIEAAAAMBAJ&q=peace+sells+megadeth&pg=PA45|access-date=November 24, 2013}}</ref> MTV also recognized the band as an influential metal act, highlighting the technical aspect of the early albums.<ref>{{cite web|last=Wiederhorn |first=Jon |title=Greatest Metal Bands&nbsp;– Honorable Mentions |url=http://www.mtv.com/bands/m/metal/greatest_metal_bands/071406/index12.jhtml |publisher=[[MTV]] |access-date=November 24, 2013 |url-status=dead |archive-url=https://web.archive.org/web/20131021140613/http://www.mtv.com/bands/m/metal/greatest_metal_bands/071406/index12.jhtml |archive-date=October 21, 2013 }}</ref>

Megadeth is considered one of the most musically influential groups that originated in the 1980s. As part of the early American thrash metal movement, the band's music was a direct influence on [[death metal]].{{sfn|Purcell|2003|p=53}} Sociologist [[Keith Kahn-Harris]] wrote that the mainstream success of Megadeth was one of the reasons for the expansion of [[extreme metal]] to countries where it had previously been unknown.{{sfn|Kahn-Harris|2007|p=132}} The band had influenced many metal bands,<ref>{{cite web|last=Ramirez|first=Carlos|title=Top 10 New School Thrash Bands|url=http://noisecreep.com/top-10-new-school-thrash-bands/|website=[[Noisecreep]]|date=July 29, 2009|access-date=December 13, 2013}}</ref> including [[Sepultura]],<ref name="Angle 2024-04-03">{{cite magazine |last=Angle |first=Brad |date=April 3, 2020 |title=Sepultura's 'Beneath the Remains': Max Cavalera on "Make-It-or-Break-It Album" |url=https://www.revolvermag.com/music/sepultura-max-cavalera-beneath-remains |access-date=June 23, 2024 |magazine=[[Revolver (magazine)|Revolver]]}}</ref><ref name="AllMusic Bio">{{cite web |last=Rivadavia |first=Eduardo |title=Sepultura: Artist Biography |url=http://www.allmusic.com/artist/sepultura-mn0000741746/biography |access-date=October 4, 2013 |website=[[AllMusic]]}}</ref> [[Pantera]],<ref name="ultimateguitar 2023">{{cite web |date=June 1, 2023 |title=Pantera's 'Cowboys From Hell' Album Has Been Certified Double Platinum in the U.S. |url=https://www.ultimate-guitar.com/news/general_music_news/panteras_cowboys_from_hell_album_has_been_certified_double_platinum_in_the_us.html |access-date=June 21, 2023 |publisher=[[Ultimate Guitar]]}}</ref> [[Slipknot (band)|Slipknot]],<ref name="taylor_in3">{{cite magazine |last=Grow |first=Kory |date=June 28, 2017 |title=Slipknot and Stone Sour's Corey Taylor: My 10 Favorite Metal Albums |url=https://www.rollingstone.com/music/music-lists/slipknot-and-stone-sours-corey-taylor-my-10-favorite-metal-albums-198072/anthrax-worship-music-2011-198288/ |url-status=live |archive-url=https://web.archive.org/web/20180929041244/https://www.rollingstone.com/music/music-lists/slipknot-and-stone-sours-corey-taylor-my-10-favorite-metal-albums-198072/anthrax-worship-music-2011-198288/ |archive-date=September 29, 2018 |access-date=September 28, 2018 |magazine=[[Rolling Stone]]}}</ref> [[Bullet for My Valentine]], [[Trivium (band)|Trivium]],<ref>{{cite web |title=Trivium - metalinside |url=http://www.metalinside.de/interview/trivium |url-status=live |archive-url=https://archive.today/20170520143454/http://www.metalinside.de/interview/trivium |archive-date=May 20, 2017 |access-date=October 21, 2017 |website=Metalinside.de}}</ref> [[Avenged Sevenfold]],<ref>{{cite magazine |last=Grow |first=Kory |date=July 10, 2017 |title=Avenged Sevenfold's M. Shadows: My 10 Favorite Metal Albums |url=https://www.rollingstone.com/music/lists/avenged-sevenfolds-m-shadows-my-10-favorite-metal-albums-w491063 |access-date=June 24, 2018 |magazine=[[Rolling Stone]]}}</ref> [[Arch Enemy]],<ref name="guitartheory2">{{cite web |title=Jeff Loomis on Composition |url=http://musictheoryforguitar.com/compositioninterviewwithjeffloomis.html |access-date=August 18, 2013 |website=MusicTheoryForGuitar.com}}</ref> [[Children of Bodom]], [[Lamb of God (band)|Lamb of God]],<ref>{{cite web |author=Phil Freeman |date=February 24, 2012 |title=Lamb of God's Chris Adler's Five Favorite Drummers |url=http://www.wonderingsound.com/interview/lamb-of-gods-chris-adlers-five-favorite-drummers/ |url-status=dead |archive-url=https://web.archive.org/web/20150709082529/http://www.wonderingsound.com/interview/lamb-of-gods-chris-adlers-five-favorite-drummers/ |archive-date=July 9, 2015 |access-date=April 21, 2015 |publisher=wonderingsound.com}}</ref> [[As I Lay Dying (band)|As I Lay Dying]], [[All That Remains (band)|All That Remains]], [[Evile]] and [[Toxic Holocaust]].<ref name="Drover"/>
According to [[Nielsen SoundScan]], Megadeth has sold 9.2 million copies of its albums in the United States between 1991 and 2014.<ref>{{cite magazine|last=Gensler|first=Andy|title=How Marty Friedman Went From Megadeth to the 'Ryan Seacrest Of Japan'|url=https://www.billboard.com/articles/news/6106344/marty-friedman-japan-tv-celebrity-megadeth-guitarist-inferno-album|magazine=[[Billboard (magazine)|Billboard]]|date=June 3, 2014|access-date=June 5, 2014}}</ref>

==Band members==
{{main|List of Megadeth band members}}
'''Current'''
* [[Dave Mustaine]] – guitars, lead vocals <small>(1983–2002, 2003–present)</small>
* [[James LoMenzo]] – bass, backing vocals <small>(2006–2010, 2021–present)</small>
* [[Dirk Verbeuren]] – drums <small>(2016–present)</small>
* [[Teemu Mäntysaari]] – guitars, backing vocals <small>(2023–present)</small>

==Discography==
{{mainlist|Megadeth discography}}

'''Studio albums'''
* ''[[Killing Is My Business... and Business Is Good!]]'' (1985)
* ''[[Peace Sells... but Who's Buying?]]'' (1986)
* ''[[So Far, So Good... So What!]]'' (1988)
* ''[[Rust in Peace]]'' (1990)
* ''[[Countdown to Extinction]]'' (1992)
* ''[[Youthanasia]]'' (1994)
* ''[[Cryptic Writings]]'' (1997)
* ''[[Risk (Megadeth album)|Risk]]'' (1999)
* ''[[The World Needs a Hero]]'' (2001)
* ''[[The System Has Failed]]'' (2004)
* ''[[United Abominations]]'' (2007)
* ''[[Endgame (Megadeth album)|Endgame]]'' (2009)
* ''[[Thirteen (Megadeth album)|Thirteen]]'' (2011)
* ''[[Super Collider (album)|Super Collider]]'' (2013)
* ''[[Dystopia (Megadeth album)|Dystopia]]'' (2016)
* ''[[The Sick, the Dying... and the Dead!]]'' (2022) 
* ''[[Megadeth (album)|Megadeth]]'' (2026)<ref>{{cite magazine| url=https://www.billboard.com/music/rock/megadeth-last-album-farewell-tour-vic-rattlehead-video-1236044456/| title=Megadeth Announces Final Album & Tour With a Message to Fans: 'Don't Be Mad, Don't Be Sad'|date=August 14, 2025|last=Cummings-Grady|first=Mackenzie|access-date=October 2, 2025|magazine=[[Billboard (magazine)|Billboard]]}}</ref>

==Accolades==
{{main list|List of awards and nominations received by Megadeth}}

[[Classic Rock Roll of Honour Awards]]:
* 2014: Metal Guru – Dave Mustaine

[[Clio Awards]]:
* 2016: Silver Winner&nbsp;– "The Megadeth VR Experience"

[[Genesis Awards]]:<ref>{{cite web|title=Megadeth 'Countdown to Extinction: Live' To Be Released Worldwide on September 24|url=http://www.businesswire.com/news/home/20130828005231/en/Megadeth-%E2%80%98Countdown-Extinction-Live%E2%80%99-Released-Worldwide-September|publisher=[[Business Wire]]|date=August 28, 2013|access-date=December 26, 2013}}</ref>
* 1993: Doris Day Music Award&nbsp;– ''[[Countdown to Extinction]]''

[[Grammy Awards]]:
* 2017: [[Grammy Award for Best Metal Performance|Best Metal Performance]]&nbsp;– "[[Dystopia (song)|Dystopia]]"<ref name=":0" />

[[Loudwire|''Loudwire'' Music Awards]]:<ref>{{cite web|author=''Loudwire'' staff|title=Megadeth Win Two 2011 Loudwire Music Awards|url=http://loudwire.com/megadeth-win-two-2011-loudwire-music-awards/|work=[[Loudwire]]|date=January 2, 2012|access-date=December 29, 2013}}</ref>
* 2011: Metal Album of the Year&nbsp;– ''[[Thirteen (Megadeth album)|Thirteen]]''
* 2011: Metal Song of the Year&nbsp;– "[[Public Enemy No. 1 (Megadeth song)|Public Enemy No. 1]]"

[[Metal Hammer|''Metal Hammer'' Golden Gods Awards]]:<ref>{{cite news|url=http://www.blabbermouth.net/news/metal-hammer-golden-gods-awards-complete-list-of-winners/|title=Metal Hammer Golden Gods Awards: Complete List of Winners|date=June 17, 2008|work=[[Blabbermouth.net]]|access-date=March 8, 2009}}</ref>
* 2007: Riff Lord&nbsp;– Dave Mustaine
* 2015: Golden God&nbsp;– Dave Mustaine

[[Revolver (magazine)|''Revolver'' Golden Gods Awards]]:<ref>{{cite web|last=Carman|first=Keith|title=Isis, Metallica, Slipknot Winners At the Epiphone Revolver Golden Gods Awards|url=http://exclaim.ca/music/article/isis_metallica_slipknot_winners_at_epiphone_revolver_golden_gods_awards|work=[[Exclaim!]]|date=April 8, 2009|access-date=April 10, 2009}}</ref>
* 2009: Golden God&nbsp;– Dave Mustaine

==Notes==
{{notelist}}

==References==
{{Reflist}}

==Bibliography==
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* {{cite book|editor1-first=Richie|editor1-last=Unterberger|editor2-first=Samb|editor2-last=Hicks|year=1999|title=Music USA: The Rough Guide|publisher=[[Rough Guides]]|isbn=1-85828-421-X|url-access=registration|url=https://archive.org/details/musicusaroughgui0000unte}}
* {{cite book|last=Wagner|first=Jeff|title=[[Mean Deviation: Four Decades of Progressive Heavy Metal]]|year=2010|publisher=[[Bazillion Points Books]]|isbn=978-0-9796163-3-4}}
{{Refend}}

==External links==
{{Commons category}}
{{Wikiquote}}
* {{Official website}}
* [https://www.megadetharizona.com Megadeth, Arizona] – Reconstructed site from circa 2000
* {{AllMusic|class=artist|id=mn0000406294|label=Megadeth}}
* {{Discogs artist}}
* {{IMDb name|nm1655103}}

{{Megadeth}}
{{Grammy Award for Best Metal Performance}}

{{Authority control}}

[[Category:Megadeth| ]]
[[Category:1983 establishments in California]]
[[Category:American speed metal musical groups]]
[[Category:Capitol Records artists]]
[[Category:Grammy Award winners]]
[[Category:Heavy metal musical groups from California]]
[[Category:Musical groups established in 1983]]
[[Category:Musical groups disestablished in 2002]]
[[Category:Musical groups reestablished in 2004]]
[[Category:Musical groups from Los Angeles]]
[[Category:Musical quartets from California]]
[[Category:Musical quintets from California]]
[[Category:Musical trios from California]] 
[[Category:American political music groups]]
[[Category:Roadrunner Records artists]]
[[Category:Thrash metal musical groups from California]]
[[Category:Universal Records artists]]