MysteryOS

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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.

Developer: Clermont Digital
Released: 19 Mar 2026
Price: Free to play
Platforms

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Update posts

0 posts

Posts announcing an update, tagged as patch notes or not

Last 90 days

How this is measured

Posts in a game's official Steam news feed that announce an update: tagged as patch notes by the developer, or plainly about a patch or a released update.

News checked every 30 days

An announcement is not a build. Developers can ship updates without a post, or post about several updates at once.
Untagged posts are recognised from their words, so a few updates are missed and a few other posts may be counted. Tagged posts are marked Patch notes on the Updates tab; recognised ones are marked Update.
Older posts are being read back through each game's history, most played games first, so months before October 2026 fill in over the coming days.

Source: Steam Web API, ISteamNews/GetNewsForApp. Full methodology

Announcements

No posts seen yet.

From the game’s Steam news feed. An announcement is not a build: games can update without posting. Every public build we saw is on the Builds tab.

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