The U.K. and Ireland box office witnessed a historic opening weekend as A24’s psychological horror “Backrooms” seized the top spot, grossing £4.2 million ($5.7 million).

The film delivered the biggest opening weekend in A24’s history for the territory.

Disney’s “The Mandalorian and Grogu” moved to second place in its sophomore frame, earning $3.5 million. The film has amassed a cumulative total of $15.2 million after 10 days in theaters.

Universal’s biographical musical drama “Michael” was at No. 3 during its sixth week of release. The film added $2.3 million to its lifetime haul, pushing its U.K. total to $64.7 million. The studio was also in fourth place with Curry Barker’s horror-romance “Obsession,” which collected $2.1 million in its third frame. The breakout genre hit has now grossed a cumulative $9.2 million.

Disney’s “The Devil Wears Prada 2” rounded out the top five in its fifth weekend, pulling in $1.1 million for a cumulative total of $43.3 million.