What's on HBO Max in September

Here's everything that's streaming on HBO Max in September 2026.

Backrooms (September 25)

The hit movie Backrooms from director Kane Parsons and starring Chiwetel Eijofor and Reinate Reinsve will have its streaming premiere on Friday September 25.

The films follows a furniture store owner and would-be architect (Ejiofor) who gets lost in a world somehow connected to his store, filled with an endless network of interconnected rooms where time bends and the only thing scarier than getting lost is the sense that something is lying in wait. 

But when he doesn't show up for an appointment, his therapist wades in to rescue him (Reinsve).