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MysteryOS

Also known as MysteryOS, m, mysteryos

You wake up at a terminal you've never seen before. The language is alien. The interface is hostile. Every wrong click has consequences. Decode constructed languages, navigate unfamiliar operating systems, and survive the unknown in this puzzle-survival experience.

Last update
2 Jun 2026
Players now
0

Latest update

Patch notes

May the 4th be with you - from an OS far, far away

"kron'al ashul. The Force, as you call it." The Kron'thul collective have their own legends. Tatooine isn't one of them. Lightsabers, they've never seen. But the part where someone wakes up on a strange world, surrounde…

1 changeMapsRead patch notes

Update history

Browse past updates and patch notes for this game.

10 updates

Gallery

In-game media

Achievements

Community progression

Top picks from 13 Steam achievements, sorted by player unlock rates.

  • Signal ReceivedComplete the First Contact mission76.3%
  • Edge WalkerTrigger 3 or more near-miss danger warnings35.9%
  • Note CollectorDrag and arrange 4 sticky notes35.8%
  • Frequency LockClick the signal widget 10 times16.9%
  • Mission CompleteComplete all story missions in AXIOM/115.4%
  • Project EchoComplete the Project Echo mission15.3%