Announcement
New Content & Bugs Fixes
Some bugs fixes and improvements: - Fixed some map issues - Fixed pause menu not locking the mouse cursor after resuming
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Tkium Underground
Also known as Tkium Underground, steam:2158880, tkium underground
Tkium Underground is a short horror escape game taking place in an unknown tunnels facility. Activate generators, levers, and find a specific object to unlock the exit door, then find it. You were not the first one to be in this situation, but will you be the first one to escape alive?
Last update
22 Jun 2026
Players now
0
Latest update
Update history
Browse past updates and patch notes for this game.
2 updates
Gallery
In-game media
Achievements
Community progression
Top picks from 5 Steam achievements, sorted by player unlock rates.
- Please No!You were killed by the entity.69.6%
- Only one.You activated your first generator.64.2%
- The key.You found the key to the door, this skull.39.2%
- Is it the end?You unlocked the door and escaped.10.7%
- I am used to this.You escaped the facility in less than 30 minutes.8.9%