How many people are playing Cosmic Ultramarine right now?

Cosmic Ultramarine has 2 players on Steam right now, with a 24-hour peak of 3 and an all-time peak of 3 on 10 Sep 2026.

What is the all-time peak player count of Cosmic Ultramarine?

3 concurrent players on 10 Sep 2026.

Cosmic Ultramarine was released on Steam on 11 Nov 2024.

GameApp ID 3,296,760by 21st NostalgiaReleased 11 Nov 2024

WindowsEngine —

App ID3,296,760

Release date11 Nov 2024

Engine—

Install size651 MB

TypeGame

Last update27 Mar 2026

Steam Deck—

DLC0

Developer21st Nostalgia

Changenumber36,717,760

Price—

Packages0

PublisherGame Poetics

SystemsWindows

Followers—

Depots1

Cosmic Ultramarine

Steam user reviews

Very Positive

97.4%· 423 reviews

Recent —

SteamPeaks Rating

95.1 Overwhelmingly positive

Recent 30 days —

Playing now

+2 vs. yesterday

67%of peak

All-time peak

From the store page

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No achievements.

Cosmic Ultramarine Achievements · SteamPeaks