The upcoming horror movie, Backrooms, is being investigated for its origins by fans who have found references to the original 4chan post and internet lore. On March 30, A24 posted two new Backrooms posters featuring stars Chiwetel Ejiofor and Renate Reinsve, with the caption "If you're not careful," which is taken from the original post on 4chan. Other fans have noticed that the posters differ from their own, suggesting they are different versions of the backrooms. The film is set to release on May 29, 2026.