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 6 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

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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 1 hour ago · not a live figure

—of peak

All-time peak

6 Sep 2026

Steam user reviews · 12 written

Updated 12 Sep 2026, 23:15 UTC

SteamPeaks Rating

New

Needs ten reviews

Positive share

41.7%Mixed

Last 30 days

—

No reviews in the last 30 days

Played before writing

—

Sampling starts with the review poller

Reviews per day

—

From Valve’s daily histogram

How sentiment moved · share of new reviews that were positive

Awaiting the histogram

Not enough samples yet. The line appears once a few readings are in.

Positive shareReviews writtenLifetime shareDrag across the chart to zoom · double-click to reset

Mystery OS Reviews · SteamPeaks

Mystery OS

Mystery OS

Who is reviewing

Review history