It’s wild to consider that Backrooms (now on HBO Max) is only the second biggest horror phenom of 2026. The first, Obsession, defied the norm with its week-to-week escalating ticket sales (it landed at $426 million worldwide), but was the more structurally and thematically conventional of the two. Backrooms followed a more typical box office journey to its $364 million take, but offers a more challenging narrative, one based on 20-year-old director Kane Parsons’ YouTube series, which creeped out millions