How many people are playing Cosmic Ultramarine right now?

Cosmic Ultramarine has 0 players on Steam right now, with a 24-hour peak of 2 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.

When was Cosmic Ultramarine released on Steam?

Cosmic Ultramarine was released on Steam on 11 Nov 2024.

Status

SteamPeaks

Cosmic Ultramarine

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

WindowsEngine —

View on SteamSteamCompare

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

Compare this game

Cosmic Ultramarine

21st Nostalgia·Game Poetics
Released 11 Nov 2024·App 3296760

Steam user reviews

Very Positive

97.4%· 423 reviews

Recent —

SteamPeaks Rating

95.1 Overwhelmingly positive

Recent 30 days —

How it works

Playing now

−1 vs. yesterday

0.0%of peak

All-time peak

Steam user reviews · 423 written

Updated 9 Sep 2026, 11:18 UTC

SteamPeaks Rating

95.1

Overwhelmingly positive

Positive share

97.4%Very Positive

Last 30 days

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No reviews in the last 30 days

Played before writing

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Sampling starts with the review poller

Reviews per day

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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 share

Cosmic Ultramarine Reviews · SteamPeaks

Cosmic Ultramarine

Cosmic Ultramarine

Who is reviewing

Review history