15th Prison
Short description
15th Prison is a horror escape game. There is no exit from this prison. But examine your surroundings carefully and do not ignore any abnormalities. Take the envelope in each block and move on. Your carelessness may result in death.
- Developer
- Zettanium
- Publisher
- Zettanium
- Release
- Tue, May 20, 2025
- Price
- $3.99
- Reviews
- 28
- Positive
- 93%
- Followers
- n/a
- Owners (estimated)
- 0 – 20K
- Concurrent players
- 2
- Genres
- Action, Adventure, Indie, Simulation
- Tags
Review count and SteamSpy's owner range agree well enough to narrow the estimate down to this band. Multiplied by the $3.99 launch price — there is not enough price history for this game to weight the copies by what they actually sold for. Before Steam's cut, VAT and refunds. How these numbers are calculated.
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Media
History
Tracking started Aug 17, 2026. Charts appear once there is more than one data point — nothing has changed since.
Similar games that found an audience
Games sharing at least 3 of this title's leading tags, with enough reviews to have gone somewhere. Ranked by how much they overlap, not by how big they are. − missing and + extra mark the tags each one does not share with 15th Prison. Studio counts the titles that developer has released — the closest thing to production scale that public data allows. It is not a budget, and nobody publishes those.
| Image | Name | Studio | Shared | Tag difference | Price | Reviews | Positive | Released | Revenue (estimated) |
|---|---|---|---|---|---|---|---|---|---|
|
Just Crow Things | Unbound Creations 7 titles | 4 | − Walking Simulator − Puzzle-Platformer + Adventure + Casual | $19.99 | 316 | 94% | Thu, Aug 15, 2024 | $275k $122k – $386k |
|
Q.U.B.E. 10th Anniversary | Toxic Games 3 titles | 4 | − Action-Adventure − Walking Simulator + First-Person + Adventure | $19.99 | 165 | 90% | Wed, Sep 14, 2022 | $130k $58k – $231k |
|
Loser Simulator | Frosted Wings Studio 12 titles | 4 | − Walking Simulator − Puzzle-Platformer + RPG + 3D Platformer | $1.99 | 88 | 86% | Wed, Jun 12, 2024 | $8k $4k – $14k |
|
Planet of Lana | Wishfully 2 titles | 3 | − Simulation − Action-Adventure − Walking Simulator + Female Protagonist + 2D Platformer + Atmospheric | $19.99 | 9,782 | 93% | Tue, May 23, 2023 | $8.8m $4m – $10m |
|
Space Engineers 2 | Keen Software House 5 titles | 3 | − Puzzle − Walking Simulator − Puzzle-Platformer + Sandbox + Strategy + Exploration | $29.99 | 4,830 | 74% | Mon, Jan 27, 2025 | $6m $3m – $6m |
There are more like this. Your plan shows the 5 closest neighbours; Plus and Pro show up to 100 — enough to see the shape of a niche instead of a sample of it.