Screenshots
Watch trailer on Steam ↗15th Prison
Zettanium · Published by Zettanium · Official site ↗
Positive — 94% positive (34 reviews) · 4 achievements
Last updated 28 Sept 2026
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.
£3.39
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Price history
Action, Adventure, Indie, Simulation · 2025 · More under £5 games
In 15th Prison, you navigate a relentless maze without an exit. Developer Zettanium challenges you to find hidden envelopes and uncover horrors lurking in every shadow.
About this game
To go to block 15 and find the escape route in the prison, observe your surroundings carefully and take the envelope given by the guard at each block pass. These envelopes are important for your escape plan!
Do not ignore any anomalies.
If you find anomalies, turn back immediately.
If you do not find anomalies, do not turn back. Move forward.
When you reach block 15, 3 different doors are waiting for you. You will encounter different endings and puzzles in these doors.
If you solve the puzzle at the end, your escape from prison will be easier. Good luck…
Playing Time
20-90 minutes
System Requirements
Will my PC run this? →Minimum
- Requires a 64-bit processor and operating system
- OS *: Windows 7 / 8 / 10 / 11 - 64 bit
- Processor: Intel Core i3
- Memory: 2 GB RAM
- Graphics: NVIDIA GeForce GTX 650+
- DirectX: Version 10
- Storage: 2 GB available space
- Sound Card: Any
Recommended
- Requires a 64-bit processor and operating system
Supported Languages
Latest news
Patch NotesOfficial
2 June Update
Minor Bug Fixed.Read full article on Community Announcements (Zettanium)Patch NotesOfficial
23 May Update
Minor bugs fixed.Read full article on Community Announcements (Zettanium)Patch NotesOfficial
21 May Update
Text errors in some languages have been corrected.Read full article on Community Announcements (Zettanium)AnnouncementsOfficial
15th Prison Coming Soon!
You will try to find anomalies and escape from a 15-block prison where the world's most dangerous criminals are held, either alone or with up to 4 friends. Add 15th Prison to your Wish List so you don't miss this exciting and attention-demanding adventure.Read full article on Community Announcements (Zettanium)
