MORSOMNIA:0

A text-driven adventure about caring for a mysterious underground creature

沐沐睡星 · Released Jan 30, 2025

Reviews: Very Positive; 99% of 70
Recent reviews: Not enough recent
Players: 0; daily peak, Oct 28, 2026
Steam Deck: Untested
Last update on Steam: 1 year ago; May 7, 2025
Minimum PC: DirectX 9 GPU; 2 GB RAM · 4 GB disk; Full requirements

What is MORSOMNIA:0?

This single-player adventure follows Kaiyou, a researcher at an island laboratory who joins a secret project involving a mysterious space called Morsomnia. You advance the story by reading text and interacting with the life form Kuon, with optional cafeteria visits and conversations with laboratory staff.

For you if...

+you enjoy surreal science fiction with psychological horror themes

Not for you if...

−you want mechanically demanding gameplay or multiplayer modes

What players say

99% of 70 reviews are positive

Players praise the game's visual presentation.

Screenshots and trailer

MORSOMNIA:0 system requirements

Minimum: DirectX 9 GPU, 2 GB RAM, 4 GB of disk space.

As published by the developer.

Can my PC run MORSOMNIA:0?

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Minimum

OS: Windows 10
Processor: Intel Core2 Duo or higher
Graphics: DirectX 9/OpenGL 4.1 capable GPU
Memory: 2 GB RAM
Storage: 4 GB available space
DirectX: Version 9.0

Does MORSOMNIA:0 have co-op or multiplayer?

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

Single-player

Does MORSOMNIA:0 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
Steam features: Family Sharing
Languages: Text only: Japanese.

Does MORSOMNIA:0 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