How many people are playing Mystery OS right now?

Mystery OS is app 4466610 on Steam. Player counts appear once the tracker has sampled it.

What is the all-time peak player count of Mystery OS?

0 concurrent players on 12 Sep 2026.

Mystery OS was released on Steam on 19 Mar 2026.

GameApp ID 4,466,610by Clermont DigitalReleased 19 Mar 2026

Engine —

App ID4,466,610

Release date19 Mar 2026

Engine—

Install size1.21 GB

TypeGame

Last update20 May 2026

Steam Deck—

DLC1

DeveloperClermont Digital

Changenumber37,321,534

Price—

Packages0

PublisherClermont Digital

SystemsWindows · macOS · Linux

Followers—

Depots3

Mystery OS

Steam user reviews

Mixed

41.7%· 12 reviews

Recent —

SteamPeaks Rating

Not enough reviews yet

Rated from 10 reviews

Last seen

Sampled 1 hour ago · not a live figure

—of peak

All-time peak

12 Sep 2026

From the store page

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No achievements.

Mystery OS Achievements · SteamPeaks