OYASUMII

Retro horror exploration inside a surreal, maze-filled virtual world

NEO PROJECT Studios · Released Mar 7, 2025

Reviews: Very Positive; 81% of 105
Recent reviews: Not enough recent
Players: 0; daily peak, Oct 28, 2026
Steam Deck: Untested
Last update on Steam: 1 year ago; Oct 5, 2025
Minimum PC: HD 7570; 4 GB RAM · 1 GB disk; Full requirements

What is OYASUMII?

A single-player horror adventure set inside Dream Quest Online, a virtual world whose secrets you investigate. You walk through strange environments, navigate mazes, jump across platforms, and run from lurking threats.

For you if...

+you enjoy slow exploration punctuated by platforming and chases
+you like dreamlike spaces and references to older games

Not for you if...

−you prefer long games to short exploratory experiences

What players say

81% of 105 reviews are positive

Players praise the retro visuals, music, and sound design. Common complaints concern repetitive walking through sparse areas and vague storytelling that leaves players without a satisfying conclusion.

Screenshots and trailer

OYASUMII system requirements

Minimum: HD 7570, 4 GB RAM, 1 GB of disk space.

As published by the developer.

Can my PC run OYASUMII?

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Minimum

OS: Windows 7 or higher.
Graphics: AMD HD 7570
Memory: 4 GB RAM
Storage: 01 GB available space

Does OYASUMII have co-op or multiplayer?

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

Single-player

Does OYASUMII 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: 8
Steam features: Cloud saves, Family Sharing
Languages: Text only: English, French, Italian, German, Spanish - Spain, Portuguese - Brazil, Spanish - Latin America.

Does OYASUMII 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