Internet culture is showing up in a big way in theaters, as low-budget horror films "Backrooms" and "Obsession" led this weekend's box office and beat out big franchise films like "Star Wars: The Mandalorian and Grogu."

A24's "Backrooms" topped the charts with $81.5 million in the U.S. and Canada in its opening weekend, according to studio estimates. The film is directed by 20-year-old YouTuber Kane Parsons, who based it on his internet series of the same name.

"Backrooms," which reportedly had a production budget of about $10 million, stars Chiwetel Ejiofor as a furniture store owner who finds a mysterious portal in his basement. The film made a total of $118 million worldwide.

In second place was Focus Features' "Obsession," which hauled in $26.4 million in its third weekend in theaters, up 10% from the previous weekend's total. The film, which had a production budget of less than $1 million, has now grossed $104.7 million domestically for a global total of $148 million.

"Obsession" director Curry Barker is also known for his YouTube sketch comedy channel.

The success of two YouTube-native filmmakers at the box office indicates the growing power of the platform — and online culture as a whole — in attracting audiences to cinemas.

Walt Disney Co. and Lucasfilm's "The Mandalorian and Grogu" fell to third place this weekend with a domestic gross of $25 million. Lionsgate's musical biopic "Michael" ($11.7 million) and Sony Pictures' family comedy "The Breadwinner" ($7.5 million) rounded out the top five at the box office, according to Comscore data.

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