{{Short description|American music festival}} '''Flatline Fest''' is a two-day American music festival focused on extreme metal held at the Oriental Theater in Denver, Colorado. It will debut in 2026, and is scheduled to be held on June 13th and 14th. The event is organized by music producer Dave Otero. Acts included on the roster include Cattle Decapitation, Aborted, Archspire, the Zenith Passage, Cephalic Carnage and Allegaeon. A masked band called Nuclear Power Trio, which is rumored to contain members of Cephalic Carnage, Allegaeon, and Havok is also scheduled to play.<ref>{{Cite web |last=Keenan |first=Hesher |date=2026-01-08 |title=Cattle Decapitation, Aborted, Archspire, and More Announced for Dave Otero's Flatline Fest |url=https://www.metalsucks.net/2026/01/08/cattle-decapitation-aborted-archspire-and-more-announced-for-dave-oteros-flatline-fest/ |access-date=2026-03-05 |website=MetalSucks |language=en}}</ref><ref>{{Cite web |last=Mahmud |first=Abir |date=2026-01-08 |title=News: Acclaimed Producer Dave Otero Launches ‘Flatline Fest’ |url=https://newnoisemagazine.com/news-acclaimed-producer-dave-otero-launches-flatline-fest/ |access-date=2026-03-05 |website=New Noise Magazine |language=en-US}}</ref><ref>{{Cite web |date=2026-01-08 |title=ARCHSPIRE & CATTLE DECAPITATION To Headline DAVE OTERO's Inaugural Flatline Fest In Denver |url=https://metalinjection.net/tour-dates/archspire-cattle-decapitation-to-headline-dave-oteros-inaugural-flatline-fest-in-denver |access-date=2026-03-05 |website=Metal Injection |language=en-US}}</ref><ref>{{Cite web |last=Criado |first=Justin |date=2026-01-08 |title=New Extreme Metal Festival to Debut in Denver |url=https://www.westword.com/music/denver-flatline-fest-to-debut-with-extreme-metal-madness-40827206/ |access-date=2026-03-05 |website=Denver Westword |language=en-US}}</ref>
== See also ==
* Milwaukee Metal Fest * Shamrock Slaughter * A389 Bash * Metal Threat * Hell's Heroes * Big Texas Metal Fest * Toledo Death Fest * Mad With Power
== References == <references />
Category:Extreme metal Category:Music festivals in Colorado Category:Festivals in Denver Category:2026 in Denver Category:June 2026 in the United States
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