15th Prison −30%

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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
Released: 20 May 2025
Price: $2.79 ~~$3.99~~
Platforms
Languages: English +11

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Players on Steam, last 48 hours

Steam concurrent players, polled every 30 days. Observed since 24 Oct 2026. As of 12:19 UTC.

Show the numbers

Players of 15th Prison, last 48 hours, newest first
Poll	Players
29 Oct, 18:46 UTC	0

How this is measured

Player counts over time, as we observed them.

Counts people running the game through Steam only. Players on other stores, consoles or launchers are not included.
We poll the busiest games every 15 minutes and quiet ones as rarely as once a month, so a short spike between polls can be missed. Each game shows how often it is polled.
Our player history starts on 19 October 2026. Earlier peaks, including launch peaks, are not in our data.

Source: Steam Web API, ISteamUserStats/GetNumberOfCurrentPlayers. Full methodology

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15th Prison −30%

Players on Steam, last 48 hours

Players on Steam, last 48 hours

Players By Month

15th Prison −30%

Players By Month