Kane Parsons’ A24 horror film “Backrooms” is drawing major box office results, earning $38 million domestically on Friday from 3,442 theaters, according to reports. Multiple outlets say the performance already surpasses A24’s previous opening weekend record, which had been set by Alex Garland’s thriller “Civil War.” Estimates cited across sources project “Backrooms” will generate roughly $85 million to $90 million across the full opening weekend. The film is adapted from Parsons’ viral YouTube series “Backrooms,” and its turnout is described as exceeding expectations and strengthening its status as a breakout theatrical release for the studio. While specific comparisons beyond A24’s prior records vary by outlet, both confirm the same central figures: the $38 million opening day, the theater count, and the projected opening-weekend range. Together, the reports indicate “Backrooms” is on track to deliver A24’s biggest opening since the studio began tracking these records, reflecting unusually strong early momentum for a horror title.