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 is a runaway hit — a horror phenomenon that went from a YouTube series to a smashing debut from 20-year-old director Kane Parsons that just had a

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 in history for an original horror film.

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.

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.

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.

So what exactly are the Backrooms, and why is everyone so very excited about this new horror movie? Like so many modern horror concepts, the Backrooms began as a meme on 4Chan. In 2018, someone anonymously posted an image of a yellow room where the walls just didn’t fit right.