How many people are playing Cepheus Protocol right now?

Cepheus Protocol has 39 players on Steam right now, with a 24-hour peak of 51 and an all-time peak of 378 on Oct 2021.

What is the all-time peak player count of Cepheus Protocol?

378 concurrent players on Oct 2021.

When was Cepheus Protocol released on Steam?

Cepheus Protocol was released on Steam on 15 May 2020.

Status

SteamPeaks

Cepheus Protocol

GameApp ID 979,640by Halcyon WindsReleased 15 May 2020

WindowsEngine —

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Update history

A permanent record of every observed change.

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Cepheus Protocol Update History · SteamPeaks

Showing keys matching the filter · 3 events on this page have no match

Time (UTC)SourceWhat changedAddedEditedRemovedReference

6 Sep 2026

15:22:21PICSExperimental manifest changed—~6—#38,646,181

Recorded change · 6 Sep 2026, 15:22:21 UTCView all 6

Status	Key	Previous value	New value
Edited	Download size on experimentaldepots.979641.manifests.experimental.download	10.33 GB11090567632	10.33 GB11091028144+450 KB
Edited	Manifest on experimentaldepots.979641.manifests.experimental.gid	4680044417656771607	3697447492147148318
Edited	Size on disk on experimentaldepots.979641.manifests.experimental.size	11.24 GB12064308639	11.24 GB12065612719+1.2 MB

Raw values

15:22:17BuildsExperimental branch updated · 1 depot—~1—25145247

Depot 979641 · experimental

Previous manifest4680044417656771607

New manifest3697447492147148318

Download sizeManifest ID recorded · file listing pending

Raw values

5 Sep 2026

20:12:48BuildsBork branch updated · 8 depots—~8—25144781

Depot 979641 · bork

Previous manifest—

New manifest5639246734349716837

Depot 1387390 · bork

Previous manifest—

New manifest1286529532299846223

Depot 1997150 · bork

Previous manifest—

New manifest2646314920170677226

Depot 2496520 · bork

Previous manifest—

New manifest

4 Sep 2026

16:25:45PICSExperimental manifest changed—~6—#38,609,351

Recorded change · 4 Sep 2026, 16:25:45 UTCView all 6

Status	Key	Previous value	New value
Edited	Download size on experimentaldepots.979641.manifests.experimental.download	10.33 GB11090343200	10.33 GB11090567632+219 KB
Edited	Manifest on experimentaldepots.979641.manifests.experimental.gid	545585784783107183	4680044417656771607
Edited	Size on disk on experimentaldepots.979641.manifests.experimental.size	11.24 GB12064223023	11.24 GB

3 Sep 2026

11:39:55PICSExperimental manifest changed—~6—#38,569,757

Recorded change · 3 Sep 2026, 11:39:55 UTCView all 6

Status	Key	Previous value	New value
Edited	Download size on experimentaldepots.979641.manifests.experimental.download	10.33 GB11089125440	10.33 GB11090343200+1.2 MB
Edited	Manifest on experimentaldepots.979641.manifests.experimental.gid	1663367467701435816	545585784783107183
Edited	Size on disk on experimentaldepots.979641.manifests.experimental.size	11.23 GB12062883354	11.24 GB

1 Sep 2026

10:40:27BuildsExperimental branch updated———25055878

Build 25055878 recorded on the experimental branch. Per-depot manifests and download sizes arrive with the depot worker.

Raw values

20 Aug 2026

04:25:02BuildsPublic branch updated———24829887

Build 24829887 recorded on the public branch. Per-depot manifests and download sizes arrive with the depot worker.

Raw values

7 Jan 2026

03:05:33BuildsLegacy branch updated———20415865

Build 20415865 recorded on the legacy branch. Per-depot manifests and download sizes arrive with the depot worker.

Raw values

31 Aug 2025

20:55:56BuildsLegacy-premerge branch updated———15464740

Build 15464740 recorded on the legacy-premerge branch. Per-depot manifests and download sizes arrive with the depot worker.

Raw values