How many people are playing ULTRA0 right now?

ULTRA0 is app 4019180 on Steam. Player counts appear once the tracker has sampled it.

What is the all-time peak player count of ULTRA0?

2 concurrent players on 10 Sep 2026.

ULTRA0 was released on Steam on 2 Jun 2026.

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

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Depot ID	Name	Platform	Language	Size on disk	Download size	Current manifest	Status
4019181	—	All platforms	—	331 MB	200 MB