The Backrooms movie coming out in 2026 is based on a viral YouTube short from 2022 made by Kane Parsons, who was still a teenager at the time. The video blew up for how real and unsettling it felt, and A24 quickly picked it up and gave him the chance to direct the full movie himself. He’s now just 20 years old, making him one of the youngest directors ever to helm a studio film, and it’s basically the same concept and creator, just expanded into a full feature with a bigger budget and actors.