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 13 Sep 2026.

When was Mystery OS released on Steam?

Mystery OS was released on Steam on 19 Mar 2026.

Status

SteamPeaks

Mystery OS

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

Engine —

View on SteamSteamCompare

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

Compare this game

Mystery OS

Clermont Digital
Released 19 Mar 2026·App 4466610

Steam user reviews

Mixed

41.7%· 12 reviews

Recent —

SteamPeaks Rating

Not enough reviews yet

Rated from 10 reviews

How it works

Last seen

Sampled 3 hours ago · not a live figure

—of peak

All-time peak

13 Sep 2026

Update cadence · public branch

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PICS live

116 days

Since last public build

20 May 2026, 01:00 UTC

—

Median interval

Pattern appears after five builds

Builds in 30 days

0 with patch notes · 0 unannounced

—

Downloaded in 30 days

Quiet · no builds in 30 days

All 1 builds since 2026 · UTC

When Clermont Digital ships

Click a cell to filter the builds table

036912151821

Mystery OS Patches · SteamPeaks

Mystery OS

Builds

All public

Major patches only

Date	Day	Time	Patch title	Build ID	Branch	Depots	Download Δ
20 May 2026	Wed	01:00	No patch notes · unannounced build	23315885	public	3	—

public branch · shipped todayother branchwide buildhas patch notes

Showing 1 of 1 builds · Δ is the compressed download for the public branch, available once the depot worker runsLoad older builds

Mystery OS

When Clermont Digital ships

Mystery OS

When Clermont Digital ships

Patch notes

Builds