Sony Pictures' Screen Gems is developing a film adaptation of Mouthwashing, the psychological horror game from Swedish studio Wrong Organ and publisher Critical Reflex. Karyn Kusama, whose directing credits include Jennifer's Body and The Invitation, is attached to direct. Phil Hay and Matt Manfredi will write the screenplay.
Wrong Organ and Critical Reflex confirmed the rights deal on October 29, 2026, following reports from Deadline and The Hollywood Reporter. The announcement identifies the creative team but does not include a cast, filming date or theatrical release window. It would be premature to describe the movie as being in production.
The team behind the adaptation
Hay and Manfredi have previously collaborated with Kusama on The Invitation and Destroyer, making this a reunion rather than an entirely new creative partnership. Scott Derrickson, C. Robert Cargill and Vince Cheng are producing through Crooked Highway. Sony's Screen Gems label is the studio home for the adaptation.
The source game takes place aboard the stranded Tulpar, a space freighter whose five crew members face dwindling food, isolation and mounting distrust. Released on PC in September 2024, Mouthwashing presents its story through first-person exploration, unsettling visuals and an increasingly fractured account of events. That structure may present unusual choices for the screenwriters, but no specific plot changes or character casting have been revealed.
The game also arrives on consoles
The film announcement coincided with a separate milestone for the game: October 29 brought console releases on PlayStation 4, PlayStation 5, Nintendo Switch and Xbox Series X|S. The game remains available on PC. Critical Reflex had announced those ports earlier in October, so the film deal and console availability are related in timing rather than being the same announcement.
Neither the developer nor Sony has explained whether the adaptation will follow the game's narrative scene for scene. Until further details are released, the confirmed news is the acquisition of film rights and the involvement of Kusama, Hay, Manfredi and the producing team. There is no official movie trailer or release date.
Image: official Mouthwashing title logo from Critical Reflex, via Wikimedia Commons. The text logo is marked public domain as a non-copyrightable typographic design; publisher trademarks remain acknowledged.
