Secret Slayground Trailer Drops A24's Saulnier Horror Teaser

A24 gave horror fans a surprise this past weekend, slipping a secret teaser trailer into theaters for a new film titled Slayground. The teaser arrived with no prior announcement, and the title is so new that it does not appear in online listings yet, according to FirstShowing, which covered the reveal on September 21. The secret teaser started playing in theaters over the September 19-20 weekend. The Slayground trailer is the first public footage from the project.

The film is a Halloween haunted-house horror written and directed by Jeremy Saulnier, the filmmaker behind Blue Ruin, Green Room, Hold the Dark, and Rebel Ridge. It was previously called October, but A24 renamed it after deciding the film would not release this October and the studio did not want to wait until next year. It is still due in theaters this fall. Debuting the footage in front of theater audiences, rather than dropping it online first, gave the teaser about as fitting a launch as a horror preview can get: the first viewers were people already sitting in dark rooms.

What the secret teaser shows

Plot details are thin, but the teaser leans on surveillance-style footage of visitors moving through a Halloween haunted house that looks far more frightening than a seasonal attraction should. The footage raises the question of whether the scares inside are staged or real, and whether something demonic is running the operation. The haunted-house setting gives the surveillance style a natural frame: every corridor in an attraction like this already has a camera. The teaser closes with the reveal of a villain character, described by FirstShowing as gnarly.

A viral companion website extends the tease. The site says A24 invites visitors to an experience they will never forget, and describes the film as an action-packed horror thriller set on Halloween night. The title refers to the haunted attraction where the lead character works. Between the unlisted title, the theater-only debut, and the cryptic site, A24 has built the entire early campaign out of the teaser's own mystery. The site gives away no plot and no release date; it exists to keep the teaser's questions unanswered.

The film behind the footage

Saulnier wrote and directed the film, which had been developing under the title October before the rename. The cast mixes rising names with veteran character actors: Chase Sui Wonders, Sophie Wilde, Stephen Root, Imogen Poots, Matty Matheson, Young Mazino, and Macon Blair. It is produced by Eli Bush, Richard Peete, Jeremy Saulnier, and Skei Saulnier.

The production kept a low profile. The film has not premiered at any festival, and A24 has released almost no other details beyond what the teaser and its website show. A24 plans to release Slayground in select US theaters this fall, with an exact date still to come. The Slayground trailer is also posted on A24's YouTube channel for anyone who missed it in theaters.

Why the secrecy fits Saulnier

The stealth rollout suits a filmmaker whose reputation was built on lean, tense genre work. Saulnier broke through with the revenge thriller Blue Ruin, followed it with the siege horror of Green Room, then directed Hold the Dark and the Netflix hit Rebel Ridge, along with episodes of the third season of True Detective. His films favor stripped-down setups and sustained tension, so a teaser assembled from haunted-house security footage lands squarely in his territory.

The rename from October to Slayground also makes practical sense. The original title pointed at a Halloween release window the film will miss, while the new title names the haunted attraction at the center of the story. For a movie about a haunted house, naming it after the house is the straightforward choice.

For now, the teaser is the whole campaign. Horror fans can watch for the exact fall release date, and the film's official site is the place to check for more. Trailer season is busy: our breakdown of the Cliff Booth trailer covers another big reveal from this week. Read the full breakdown at FirstShowing.