Wikimedia Commons/Backrooms movie Movie A24's Backrooms film, based on the viral horror phenomenon, traps a therapist in an endless maze of yellow rooms. Experience the terror May 29, 2026. April 2, 2026 AceShowbiz - The upcoming horror film Backrooms, set for release on May 29, 2026, is already creating a buzz among fans of the genre. Distributed by A24, this movie taps into a unique blend of sci-fi and found-footage style to deliver a suspenseful experience that traces its origins to an internet phenomenon.