Backrooms Hits $100M Domestic in Six Days but Slows in Third Weekend as A24’s Biggest Opener

Backrooms reached $100 million at the domestic box office on Wednesday after six days in theaters. S. and Canada and $118 million worldwide, marking A24’s highest-opening weekend ever.

The previous A24 record belonged to Marty Supreme, which earned $96 million domestically by December 2025. Backrooms has since made $144 million according to the studio. Kane Parsons, 20, directed the film.

He is best known for a YouTube series that creates eerie abandoned liminal spaces in Blender. The series has more than 200 million views. The plot follows Chiwetel Ejiofor as a furniture store owner who finds a secret portal to endless rooms.

A24 and Chernin Entertainment co-financed the project for roughly $10 million. Backrooms has earned 10 times its original budget. Parsons is the youngest filmmaker to top the box office. Earlier in 2026, YouTube creator Mark “Markiplier” Fischbach released Iron Lung, which opened above $18 million after a $3 million self-funded production.

4 million in its third weekend, up 10 percent from the prior weekend. The film had a production budget under $1 million and has grossed more than $110 million domestically and $155 million globally, according to Box Office Mojo.