Early Access
Is Cepheus Protocol still being updated?
Yes, last updated 8 days ago, with about 3 updates per month.
Last checked Oct 22, 2026
Actively updatedAll actively updated games
About the game
Cepheus Protocol is an Open World RTS Military Survival Game. Play as the CERC hunting Patient 0, maintain Quarantine camps, fight dangerous mutations & Rogue Civilian Combatants . There’s nobody else coming, it’s up to you now.
The newest build is on the experimental branch, more than 36 hours after the public branch. Steam's own Early Access notice looks at the public branch and can miss that beta activity.
Update history
Recent updates
Oct 14, 2026 · Build
experimental branch build 25920418
Latest build time Steam reports for the experimental branch.
Sep 4, 2026 · Patch note
2026.9.4 Experimental Patch Notes & September Development Update (opens in new tab)
[carousel autoadvance="true"][img src="{STEAM_CLAN_IMAGE}/33900595/497d361e44826e064983b7debd355dcf18f05454.png"] [img src="{STEAM_CLAN_IMAGE}/33900595/b63f242a5249729e9a8038deefe1f125a8c4d956.png"] [img src="https://clan.fastly.steamstatic.com/images/33900595/0068ab4a518169e0ef7eb7b1d2d010ef636cc5c3.jpg"] [img src="{STEAM_CLAN_IMAGE}/33900595/bd7ec6203465f…
Aug 21, 2026 · Patch note
2026.8.21.1 Experimental Patch Notes & August Development Update (opens in new tab)
[carousel autoadvance="true"][img src="{STEAM_CLAN_IMAGE}/33900595/497d361e44826e064983b7debd355dcf18f05454.png"] [img src="{STEAM_CLAN_IMAGE}/33900595/b63f242a5249729e9a8038deefe1f125a8c4d956.png"] [img src="https://clan.fastly.steamstatic.com/images/33900595/0068ab4a518169e0ef7eb7b1d2d010ef636cc5c3.jpg"] [img src="{STEAM_CLAN_IMAGE}/33900595/bd7ec6203465f…
Aug 20, 2026 · Build
Public branch build 24829887
Latest build time Steam reports for the public branch.
Aug 13, 2026 · Patch note
2026.8.13.1 Now Out: Final Push to Escalation (opens in new tab)
[carousel autoadvance="true"][img src="{STEAM_CLAN_IMAGE}/33900595/497d361e44826e064983b7debd355dcf18f05454.png"] [img src="{STEAM_CLAN_IMAGE}/33900595/b63f242a5249729e9a8038deefe1f125a8c4d956.png"] [img src="https://clan.fastly.steamstatic.com/images/33900595/0068ab4a518169e0ef7eb7b1d2d010ef636cc5c3.jpg"] [img src="{STEAM_CLAN_IMAGE}/33900595/bd7ec6203465f…
Questions
When was the last Cepheus Protocol update?
Cepheus Protocol last shipped a build on the experimental branch 8 days ago (Oct 14, 2026).
How often does Cepheus Protocol update?
It got about 3 updates per month over the last year and is very consistent (85/100). 10 of the last 12 months had at least one update day. Gaps between updates are fairly even.
Is Cepheus Protocol abandoned?
No. It shipped a build or patch note within the last 90 days and updates steadily.
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