OYASUMII
Relive the nostalgia with OYASUMII, a horror and exploration game inspired by PSX and N64 classics. Enter liminal spaces and face surreal terrors in an adventure that challenges your skills and sanity. Are you ready to relive the golden age of video games with OYASUMII?
Last Updated: 12/21/2025
| Steam Price | $5.59 |
| Release Date | 3/7/2025 |
| Developer | NEO PROJECT Studios |
| Publisher | NEO PROJECT Studios |
| Steam App Id | 3033520 |
OYASUMII
Relive the nostalgia with OYASUMII, a horror and exploration game inspired by PSX and N64 classics. Enter liminal spaces and face surreal terrors in an adventure that challenges your skills and sanity. Are you ready to relive the golden age of video games with OYASUMII?
Last Updated: 12/21/2025
- Windows
- Mac
- Linux
About OYASUMII
OYASUMII is an Action, Adventure, and Indie game developed by NEO PROJECT Studios. On 3/7/2025, it was released on the Steam Store by NEO PROJECT Studios.
It can be played and ran on Windows systems. At the moment, there is no confirmed information regarding Steam Deck support for this game.
It also supports 7 languanges in-game including English, French, Italian, German, and Spanish (Spain). Each language comes with varying levels of support for the in-game interface, audio, and fully translated subtitles.
According to Steam’s category system, OYASUMII supports the following features:
- Partial Controller Support
- Steam Cloud
- Full controller support
- Steam Achievements
- Single-player
- Family Sharing
From the Steam community, OYASUMII has been tagged with the following user tags:
- Exploration
- Survival Horror
- 3D Platformer
- Psychological
- Escape Room
- Atmospheric
- Multiple Endings
- Surreal
- Puzzle
- 3D
- Psychedelic
- Psychological Horror
- Retro
- Underwater
- Mystery
- Horror
- Survival
- Thriller
- Adventure
- Singleplayer
Media & Sceenshots
Watch the featured video for OYASUMII and see the latest screenshots from the Steam Store.
OYASUMII DLC
OYASUMII has 1 related app available for download from the Steam store.
| Image | Name | Type | Release Date | Actions |
|---|---|---|---|---|
 | OYASUMII Soundtrack | Music | 4/30/2025 | Steam Charts |
Related Bundles
OYASUMII is included in 1 bundle in the Steam Store. Purchasing through a bundle can give a large discount off the game's base price if you are willing to purchase multiple apps all at once.
| Image | Name | Apps | Packages | Price | Actions |
|---|---|---|---|---|---|
 | OYASUMII + Soundtrack | 2 | 2 | $6.43 | View |
Related Packages
OYASUMII is referenced by 1 package in the Steam Store. A package (or sub) is simply an item that can be purchased on Steam.
Supported Languages and Localizations
OYASUMII is available in 7 different languages with varying levels of support for the in-game interface, audio, and fully translated subtitles.
| Name | Interface | Audio | Subtitles |
|---|---|---|---|
| English | Yes | No | Yes |
| French | Yes | No | Yes |
| Italian | Yes | No | Yes |
| German | Yes | No | Yes |
| Spanish (Spain) | Yes | No | Yes |
| Portuguese-Brazil | Yes | No | Yes |
| Spanish (Latin America) | Yes | No | Yes |
Discover Similar Games
Find a new game to play just like OYASUMII through our curated lists. Steambase uses Steam's User Tag and Genre system (and other game stats) to curate a list of the best and most loved games similar to OYASUMII.
Features & Categories
Frequently Asked Questions
Soures & References
Steambase has best-in-class data powered directly by Steam, our data partners, and in-house experts. Data is enriched, cleansed, verified, and updated in real-time to ensure we surface the most up-to-date information. Learn more about the Steambase approach to data collection.
OYASUMII data has been sourced from:
- Valve Corporation. (2025, December 21). OYASUMII on Steam. Steam Store.
- Valve Corporation. (2025, December 21). OYASUMII. Steam Community Hub.
- NEO PROJECT Studios. (2024, June 13). OYASUMII. OYASUMII.