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 10 Sep 2026.

Mystery OS was released on Steam on 19 Mar 2026.

Every depot recorded for this app, sized by its current public manifest.

Export

Depot ID	Name	Platform	Language	Size on disk	Download size	Current manifest	Status
4466611	—	Windows	—	450 MB	223 MB