15th Prison (2025)

- Developer
- Zettanium
- Platforms
- Windows
- Genres
- Action, Adventure, Indie, Simulation
- Rating
- 4.7 of 5, 33 player ratings
- Typical playtime
- about 59 minutes
- Where to get it
- Steam

The catalog in 3D
The same catalog has a room you can walk around in. The cat behind the counter is the AI Catbot, and they pick real games from it when you tell them what you feel like playing. Nothing is for sale, here or in there. Go in from here and this game is already out on the counter, with more like it waiting on the shelf next to it.
How it feels
You methodically explore a grim prison, collecting envelopes and solving puzzles under a looming sense of dread.
atmospherictensepacingexplorationpuzzle-filledhorrormysteriousprocedural
What players say
Players describe this as a tense anomaly-spotting game set in a prison, harder than many in the genre. It is short, around two hours, with a final puzzle and some jumpscares. Movement feels a bit janky, and the game is very quiet. Reviews agree it is addictive and frustrating.
Screenshots






More games like this
Prison Loop (2024)
Liminal Department (2025)
Horror Prison (2024)
Revenant : In Memory Of The Day (2025)
Flat 9 (2025)
Paranormal Inc. (2025)
The Anomaly Experiment (2025)
DOORMS (2025)- More like this game, on a shelf you can walk up to.It's the lit case on the top shelf.