The A24 action thriller "Onslaught," directed by Adam Wingard and written by Simon Barrett, has opened in U.S. theaters nationwide on Friday, September 4. The film features Adria Arjona as an Army sniper named Celeste defending her trailer park home from escaped super soldiers. Dan Stevens, who previously collaborated with Wingard and Barrett on "The Guest," also stars as Dr. Hans Kammler, with the new film set in the same universe as their 2014 collaboration.
The ensemble cast also includes Eric Wareheim, Reginald VelJohnson, Michael Biehn, Alex Pereira, Drew Starkey, and Rebecca Hall. "Onslaught" is described as an R-rated, blood-splattering film, with its theatrical release intended to be experienced on the big screen.
"Onslaught" is not currently available for streaming on platforms like Netflix or HBO Max. Its theatrical exclusivity is expected to continue for the immediate future. For those looking to watch the movie at home, a digital release for purchase or rent is anticipated, followed by a streaming debut.
Due to a distribution deal between A24 and Warner Bros. Discovery, new A24 theatrical releases are made available on HBO Max. "Onslaught" is expected to begin streaming on HBO Max around early January 2026. This "Pay-1 deal" signifies that Max will be the first television channel to acquire streaming rights after the film completes its theatrical and home media release windows. For context, another recent A24 title, "The Drama," began streaming on HBO Max approximately four months after its theatrical premiere.
If "Onslaught" follows a similar pattern, it could become available for digital purchase or rent by early October 2026, with its streaming debut on HBO Max following in early January 2026. However, these are estimations, as A24's digital and streaming release schedules have varied for different titles. Those eager to see the film can currently find showings in U.S. theaters.