Slayground

Jeremy Saulnier, known for 'Green Room,' is back with 'Slayground,' a horror thriller previously known as 'October.' The film unfolds on Halloween night, centering on a terrifying chain of events set against a haunted house attraction.

A24 released the teaser trailer on September 21, 2026, which features security camera footage from the Halloween setting. The teaser first premiered in theaters alongside 'Resident Evil' screenings.

The cast includes Cory Michael Smith, Chase Sui Wonders, Sophie Wilde, Imogen Poots, James Badge Dale, Matty Matheson, Young Mazino, and Stephen Root. The score is by Trent Reznor and Atticus Ross.

Filming took place across Vancouver and Portland, and the film runs about two and a half hours. RunLikeHell.com is tied to the film and includes a countdown to October 20.