Wrong Organ and publisher Critical Reflex confirmed on October 29, 2026 that Mouthwashing is becoming a live-action movie at Sony, with Karyn Kusama directing.
Wrong Organ broke the news in an X post that read, “The rumors are true. A Mouthwashing movie adaption is currently in the works at Sony. Matt Manfredi will be in charge of writing together with Phil Hay! And in the directors chair we have legend Karyn Kusama. The Tulpar journey goes on, we hope it continues to hurt.” Publisher Critical Reflex confirmed it on X and added, “YES, MOUTHWASHING MOVIE IS REALLY HAPPENING SOON you thought you could escape responsibility by turning off your console? produced by Sony Pictures’ Screen Gems and directed by Karyn Kusama.”
Confirmed and Still Unknown
- Sony Pictures’ Screen Gems is producing the film.
- Karyn Kusama is attached as director.
- Matt Manfredi and Phil Hay are writing the screenplay.
- No release date, cast, or plot details have been announced.
Neither post included a release window, a cast list, or a story outline.
The Game Behind the Movie
Mouthwashing is a first-person psychological horror game developed by Wrong Organ and published by Critical Reflex. It launched on PC through Steam on September 26, 2024, and reached Xbox Series X|S and Xbox Game Pass on October 29, 2026, according to the October Game Pass lineup.
The five crew members of the Tulpar are stranded in the empty reaches of space, shrouded in perpetual sunset, in the Steam page’s own words: “God is not watching.” After the shipwreck, the store page describes Captain Curly: “Maimed, limbless and unable to speak, but alive, Curly is now at the mercy of the crew he has doomed to a slow death.” The crew weathers starvation, isolation, and each other, and the text frames that as a social collapse: “People were never your strong suit anyway.”
Why Kusama, Manfredi and Hay Fit
Kusama directed The Invitation in 2015, and Matt Manfredi and Phil Hay wrote that film. It built its horror from grief, denial, and the slow collapse of a dinner party. Her other credits include Jennifer’s Body in 2009, which balanced horror with character and tone, and the pilot of Yellowjackets, a survival thriller about a team stranded in the wilderness.
That record fits Mouthwashing. Kusama’s films are strongest when characters are trapped in a place they cannot leave and the scary thing is what they refuse to admit. The Invitation kept its audience inside one house, one dinner party, and one man’s suspicion. Mouthwashing traps a crew inside a ship with the same kind of pressure.
The Timing and the Indie Horror Wave
The announcement came the same day Mouthwashing reached Xbox Series X|S and Game Pass, while the game’s PC audience, playing since September 2024, was already established.
The film joins a broader push for horror game adaptations. Recent moves include the MADiSON horror game film and The Headliners movie at Studiocanal. A single ship and a small cast can be pitched as a psychological thriller.
What a Mouthwashing Film Has to Protect
The game’s horror comes from starvation, isolation, and the crew turning on each other. A film has to protect that claustrophobia and that specific power imbalance.
The game uses a nonlinear, unreliable account of guilt and denial aboard the Tulpar. A direct plot translation would not carry the same effect without a strong cinematic point of view. Because a film cannot rely on player input, the drive to uncover what happened has to come from character and structure. The writers and director will have to decide how much of the game’s nonlinear structure to keep, and that decision shapes whether audiences feel the same disorientation as the player or watch the tragedy from outside. Nothing in the announcement says how they will handle that structure.
