How many people are playing Cepheus Protocol right now?

Cepheus Protocol has 59 players on Steam right now, with a 24-hour peak of 81 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 —

View on SteamSteam

Cepheus Protocol

Halcyon Winds
Released 15 May 2020·App 979640

Steam user reviews

Mostly Positive

75.4%· 3.8K reviews

Recent —

SteamPeaks Rating

75.3 Positive

Recent 30 days —

How it works

Playing now

−15 vs. yesterday

16%of peak

All-time peak

378

Oct 2021

Every change SteamPeaks has recorded · decoded, with the original values

Update history

14 events

All14 Changelists6 Builds8 Store0

AreaAll Branches Depots Store Assets Launch options

Cepheus Protocol Update History · SteamPeaks

6 Sep 20262 events

15:22:283 days agoChangelist38,646,187 · 1 other branch · 8 depots−28

Change	Key	Before	After
Branches · 4
removed	Build ID on borkdepots.branches.bork.buildid	25144781	—
removed	Description of borkdepots.branches.bork.description	Test branch for Bork	—
removed	Build time on borkdepots.branches.bork.timebuildupdated	5 Sep 2026, 19:48:18 UTC1788637698	—
removed	Updated time on borkdepots.branches.bork.timeupdated	5 Sep 2026, 20:12:48 UTC1788639168	—

4 of 28 keys shown · changelist 38,646,187

15:22:213 days agoChangelist38,646,181 · 1 other branch · 1 depot · +1.2 MB on disk~6

Change	Key	Before	After
Branches · 3
changed	Build ID on experimentaldepots.branches.experimental.buildid	25127441	25145247
changed	Build time on experimentaldepots.branches.experimental.timebuildupdated	4 Sep 2026, 15:40:40 UTC1788536440	5 Sep 2026, 20:37:56 UTC1788640676
changed	Updated time on experimentaldepots.branches.experimental.timeupdated	4 Sep 2026, 16:25:41 UTC1788539141	6 Sep 2026, 15:22:17 UTC1788708137

3 of 6 keys shown · changelist 38,646,181

5 Sep 20261 event

20:12:554 days agoChangelist38,633,888 · 1 other branch · 8 depots+28

Change	Key	Before	After
Branches · 4
added	Build ID on borkdepots.branches.bork.buildid	—	25144781
added	Description of borkdepots.branches.bork.description	—	Test branch for Bork
added	Build time on borkdepots.branches.bork.timebuildupdated	—	5 Sep 2026, 19:48:18 UTC1788637698
added	Updated time on borkdepots.branches.bork.timeupdated	—	5 Sep 2026, 20:12:48 UTC1788639168

4 of 28 keys shown · changelist 38,633,888

4 Sep 20261 event

16:25:455 days agoChangelist38,609,351 · 1 other branch · 1 depot · +84 KB on disk~6

Change	Key	Before	After
Branches · 3
changed	Build ID on experimentaldepots.branches.experimental.buildid	25100274	25127441
changed	Build time on experimentaldepots.branches.experimental.timebuildupdated	3 Sep 2026, 11:12:41 UTC1788433961	4 Sep 2026, 15:40:40 UTC1788536440
changed	Updated time on experimentaldepots.branches.experimental.timeupdated	3 Sep 2026, 11:39:51 UTC1788435591	4 Sep 2026, 16:25:41 UTC1788539141

3 of 6 keys shown · changelist 38,609,351

3 Sep 20262 events

11:39:556 days agoChangelist38,569,757 · 1 other branch · 1 depot · +1.3 MB on disk~6

Change	Key	Before	After
Branches · 3
changed	Build ID on experimentaldepots.branches.experimental.buildid	25055878	25100274
changed	Build time on experimentaldepots.branches.experimental.timebuildupdated	1 Sep 2026, 10:40:05 UTC1788259205	3 Sep 2026, 11:12:41 UTC1788433961
changed	Updated time on experimentaldepots.branches.experimental.timeupdated	1 Sep 2026, 10:40:27 UTC1788259227	3 Sep 2026, 11:39:51 UTC1788435591

3 of 6 keys shown · changelist 38,569,757

11:12:446 days agoChangelist38,569,145 · 3 other branches · 10 depots · store metadata · assets · launch options · cloud saves · localization+325

Change	Key	Before	After
Branches · 15
added	Build ID on experimentaldepots.branches.experimental.buildid	—	25055878
added	Description of experimentaldepots.branches.experimental.description	—	Preview build with new features. Unstable, frequent updates, saves may break.
added	Build time on experimentaldepots.branches.experimental.timebuildupdated	—	1 Sep 2026, 10:40:05 UTC1788259205
added	Updated time on experimentaldepots.branches.experimental.timeupdated	—	1 Sep 2026, 10:40:27 UTC1788259227
added	Build ID on legacy-premergedepots.branches.legacy-premerge.buildid	—	15464740
added	Description of legacy-premergedepots.branches.legacy-premerge.description	—	Build from before experimental was merged into the live branch.