How many people are playing Undersea Post Office Sim Playtest right now?

Undersea Post Office Sim Playtest is app 5270420 on Steam. Player counts appear once the tracker has sampled it.

What is the all-time peak player count of Undersea Post Office Sim Playtest?

0 concurrent players on 14 Oct 2026.

Undersea Post Office Sim Playtest was released on Steam on 21 Sep 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
5270421	—	All platforms	—