Sony Pictures has acquired the feature film rights to Mouthwashing, the 2024 psychological horror game from Swedish developer Wrong Organ and publisher Critical Reflex. Deadline reported the deal on 29 October 2026 at 1:05 pm PT (20:05 UTC, 4:05 pm ET), and The Hollywood Reporter confirmed it.

Karyn Kusama (Yellowjackets, Jennifer's Body, The Invitation) is attached to direct. Her regular collaborators Matt Manfredi and Phil Hay are writing the script, and Scott Derrickson, C. Robert Cargill and Vince Cheng produce through Crooked Highway, their company with a deal at Sony's Screen Gems label.

Infographic timeline of Mouthwashing from its 26 September 2024 PC launch to Sony Pictures acquiring film rights on 29 October 2026, with cards for director Karyn Kusama, writers Manfredi and Hay, producers Crooked Highway and an 88 Metacritic score

What the game is about

Mouthwashing follows five crew members stranded on the space freighter Tulpar after a crash, as supplies run low and paranoia sets in. It's a short, first-person game told out of order, jumping between before and after the disaster, and it deals with responsibility, denial and abuse of power. Deadline says the film's plot is being kept under wraps, so it isn't known how closely it will follow the game.

A dark theatre-like room with rows of red seats lit purple, facing a small stage with a glowing sign at the top of the steps
Image: Wrong Organ / Critical Reflex (official Mouthwashing screenshot, Steam).

Why Sony picked it up

Mouthwashing launched on PC on 26 September 2024 and became one of the most talked-about indie horror games of that year. According to Deadline, it scored 88 on Metacritic, sold close to 1 million units, and won Best Narrative and Players' Choice at the Horror Game Awards. Videos about it have pulled 63 million views on YouTube and close to 1 billion on TikTok, the kind of built-in audience studios look for in adaptations.

Kusama is a strong fit for the material. Destroyer, The Invitation and Yellowjackets all centre on guilt, group tension and slowly revealed truths, which are core to the game.

Confirmed and unconfirmed

  • Confirmed: Sony Pictures holds the film rights, Kusama is attached to direct, Manfredi and Hay are writing, and Crooked Highway is producing under Screen Gems (Deadline, The Hollywood Reporter).

  • Unconfirmed: cast, plot details, filming start and release date. Wrong Organ hasn't said how involved it will be.

Where to play it

Deadline lists Mouthwashing on PS5, PS4, Nintendo Switch, Xbox Series X|S, Xbox One and PC, and says it will join Game Pass. On Steam its regular price is $12.99, and it was 40% off at $7.79 when we checked on 30 October; sale prices change. In India, Steam lists it at ₹610 (₹366 on sale). Wrong Organ is now working on Carcass Clad, a co-op tank horror game.

If it won't start on PC, our Steam game won't launch guide covers the usual fixes. Console players can use our PS5 install guide or Xbox Series install guide, and hardware details are on our PlayStation 5 and Nintendo Switch pages.

Sources & verification

Sources last verified on . This article covers published information, not hands-on testing.

Editorial & update notes

First published 30 Oct 2026 with primary-source citations.

Our editorial standards and corrections policy