Sony Takes the Indie Horror Game Mouthwashing to Film
Sony Pictures Entertainment has acquired the rights to Mouthwashing, the indie horror game from developer Wrong Organ, for a film adaptation. Engadget reported on 29 October 2026 that Karyn Kusama is attached to direct. The project does not yet have a release date.
The game launched on PC in 2024 and follows the crew of a stranded spaceship as they lose their grip on reality. That premise is the core of what Sony is now adapting: a character whose perception of the events around them cannot be fully trusted.
Deadline reported that Crooked Highway is producing the adaptation. Scott Derrickson will produce, and C. Robert Cargill is attached alongside him. Matt Manfredi and Phil Hay will write the screenplay. Manfredi and Hay wrote The Invitation, the 2015 thriller that Kusama also directed.
Kusama's credits include Jennifer's Body, The Invitation and Destroyer. Her work moves between genre horror and character-driven drama. That range bears on a project whose horror depends on mood and ambiguity rather than on set pieces alone.
In my view, the central question for this adaptation is craft rather than casting. Much of Mouthwashing's dread comes from the player controlling the camera, the pacing and the order in which clues appear. A film has to create the same disorientation without those inputs, relying on editing, sound design and performance to make the audience doubt what it sees. Several of the names attached have experience with controlled unease, but how the material translates will only be clear once the film is further along.
The broader context here is a steady flow of interactive properties into film and television development. Studios treat games as intellectual property (IP), meaning the rights to a story and its characters, and an indie title with a strong following is a comparatively low-cost starting point. The trade-off is that fans of the game already know the story's shape, so the adaptation has to offer something the original could not.
Those facts place Mouthwashing at an early stage of development. Any timeline beyond that would be speculation.
What the project makes possible is a test of whether a small, text-light, systems-driven horror experience, one whose scares come from how its mechanics interact, can work in a medium where the viewer has no hands on the controls. If the adaptation succeeds, it will suggest that unreliable narration built in one medium can carry over to another. That outcome is still well ahead. The first concrete milestones will be casting, a production start and a release window.
