Slit Mouthed - 口裂け女

Survival horror about night guards facing a Japanese urban legend

Nyxtales · Released Dec 11, 2021

Reviews: Very Positive; 82% of 79
Recent reviews: Not enough recent
Players: 0; daily peak, Oct 28, 2026
Steam Deck: Untested
Last update on Steam: 4 years ago; Dec 17, 2021
Minimum PC: GTX 770; 4 GB RAM · 5 GB disk; Full requirements

What is Slit Mouthed - 口裂け女?

This single-player horror game follows two security guards working overnight in a mansion whose owner reports strange events. You work through a security checklist as the disturbances unfold, with multiple endings to reach.

For you if...

+you enjoy puzzles alongside jump scares and survival horror

Not for you if...

−you want a lengthy horror campaign

What players say

82% of 79 reviews are positive

Players praise the mansion's atmosphere and the voice acting. Some criticize sparse or dull room layouts and endings that barely differ.

Screenshots and trailer

Slit Mouthed - 口裂け女 system requirements

Minimum: GTX 770, 4 GB RAM, 5 GB of disk space.

As published by the developer.

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Minimum

OS: Windows 7 / 8 / 8.1 / 10
Processor: Intel Core i3
Graphics: NVIDIA® GeForce® GTX 770 or better
Memory: 4 GB RAM
Storage: 5 GB available space
DirectX: Version 9.0

Does Slit Mouthed - 口裂け女 have co-op or multiplayer?

No: single-player only, no multiplayer modes declared.

Single-player

Does Slit Mouthed - 口裂け女 run on Steam Deck?

Untested Not yet tested by Valve on Steam Deck.

PC version details

DRM: None declared on Steam
Controller: Keyboard and mouse
Platforms: Windows
Achievements: 9
Steam features: Family Sharing
Languages: Full audio: Japanese. Text only: English, Korean, Simplified Chinese, Vietnamese.

Does Slit Mouthed - 口裂け女 use AI-generated content?

No AI-generated content is disclosed on the game's Steam page.

Self-reported by the developer under Steam rules: it covers AI content that ships in the game, not tools used to make it. Steam page checked on Oct 27, 2026. How to filter AI games on Steam