TMDb/Avengers: Doomsday Movie Dunesday" arrives as Avengers: Doomsday and Dune: Part Three collide. Can Marvel's billion-dollar heroes withstand the spice-fueled storm? The ultimate box o... April 16, 2026 AceShowbiz - As the cinematic clash between Avengers: Doomsday and Dune: Part Three approaches, excitement and speculation about their box office prospects are intensifying. This showdown, informally dubbed "Dunesday," positions Marvel and Warner Bros. against each other in what could be one of the biggest releases of the year.