A24’s new movie “Backrooms” took the No. 1 spot at the weekend box office and set multiple records, including largest opening weekend ever for the production company. It also marks the biggest debut

Against a production budget of $10 million, co-financed by A24 and Chernin Entertainment, the numbers represent one of the most profitable launches of 2026 and the clearest signal yet that the generation of filmmakers who built audiences on YouTube is now dominating theatrical cinema.

The movie, which hits theaters Friday, is also produced by genre leaders James Wan and Osgood Perkins, and stars Chiwetel Ejiofor, Renate Reinsve and Mark Duplass.

Backrooms’ turns an Oshkosh legend into found-footage horror built on silence, dread and claustrophobic yellow corridors.

A24's previous top dog, Civil War, managed $25 million across its entire opening weekend, while Mando netted a $33.7 million opening day and $81.6 million opening weekend⁠—it's also a better movie than people are giving it credit for. The Tippett Studios stop-motion stuff in there is really good. Grogu did nothing wrong.

Backrooms Box Office: Opening Weekend Update(Photo Credit –YouTube) Backrooms by Kane Parsons creates history at the box office in its opening weekend alone. It exceeds expectations and has already collected an estimated 1080% more than its production cost worldwide.

Before he became the youngest director ever tapped by indie powerhouse A24, Kane Parsons was creating horror videos from a quiet suburban neighborhood.

A24 is taking over Hollywood one jaw-dropping film at a time. From horror masterpieces to Oscar-sweeping dramas, we're counting down the five movies that prove this studio is built different. Your watchlist will never be the same.

Production designer Danny Vermette built an unnerving recreation of an internet 'backroom,' featuring tunnels to nowhere, musty props, and 37,000 square feet of wallpaper.