In this update6
Full notes
Full Cepheus Protocol update
Read the full published notes in a cleaner layout. The original post stays linked below.
What changed
- Maps
- Fixes
- Store
- Gameplay
- Server
- Performance
Cepheus Protocol changes
The virus is loose across the Bay Area. Flashpoints are erupting across the peninsula as entire districts fall into chaos and infected swarms push deeper into civilian zones.
CERC forces are already in the field.
Embedded military reporters and frontline operators are transmitting battlefield coverage directly from active operations. The images you are about to see were captured during recent combat deployments across the region.
These transmissions come directly from the front.
The battle for the Bay Area has begun.
2026.6.19.5 Change list:
Fixed an issue with Discord authorization that could repeatedly prompt players to log in after enabling Discord integration.
Added a new launcher experience (can be skipped via launch options) designed to improve communication with players, provide a clear view of current development priorities and roadmap progress, and highlight CERC HQ broadcasts to increase transparency and keep the community informed about ongoing development.
Steam post image View store page
Added Discord Rich Presence support, allowing friends to see your current game status, including what mode you're playing and how many players are in your session. This is an initial implementation that provides basic gameplay and session visibility through Discord.
Some cleanup to unit mouse-hovering logic to try to resolve mouse hover visuals remaining 'on' when you're not mousing over a unit
Improved unit movement recovery near cliffs and rocky terrain, helping units automatically find their way back to valid paths if they become displaced or stuck during movement.
Fixed rare cases where units in large formations could become stranded on rocks or terrain edges while navigating around obstacles.
Fixed a Targeting issue with the MLRS
Improved unit pathfinding and navigation around cliffs and rock formations across all maps, fixing numerous cases where units could become stuck, pushed off the NavMesh, or have difficulty moving through congested terrain.
Created a Console command Cheat Sheet for those that want to change the weather live here!
The Next 60 Days of Cepheus Protocol...
Civilian Evacuation is now playable from start to finish, and today’s update is focused on hotfixes, cleanup, and what comes next for the Rebuild.
If you missed yesterday’s post covering one of the biggest updates to ever touch the Cepheus Protocol Rebuild, you can read it here: View on Steam CERC HQ EP 91 Summary:
The evacuation system just hit a major milestone. For the first time, players can now play through the entire civilian rescue loop from beginning to end. This includes fully functional intake processing, evacuation buses, infection scanning upgrades, doctrine progression, and direct civilian movement into evacuation zones.
New doctrine upgrades now let you streamline processing, skip holding cells, and massively improve evacuation efficiency as your operation grows.
The infected are also getting a major overhaul. Infection spread has been rebalanced, structure construction is now visible before activation, and the late game is being tuned to reduce the frustrating “whack-a-mole” pressure players were running into. Endless Horde Mode is now available as a custom option for players who want the infection to spread forever.
Vehicle pathfinding, helicopters, gates, airstrikes, radio systems, and multiplayer syncing all received major fixes this week. The team also reworked a large number of save/load issues, improved performance for large sessions, and added better RTS management tools for handling evacuation zones and civilian flow.
Next up is a full push on formation AI, infected intelligence, new infected variants, infected lieutenants(Her Operators), Infected Leviathan (Late game super unit), Operator improvements, and the massive San Francisco North map expansion.
The goal over the next 60 days is to push every major gameplay system far beyond what existed ever before.
You can catch up on the latest CERC HQ below if you want to see the full breakdown for yourself:
The Next 60 Days
Over the next 30 to 60 days, the focus is pushing every major gameplay system forward beyond what existed before in the original build.
Civilian Evacuation polish and bug fixing
Formation AI improvements
Infected intelligence improvements
New infected variants
Lieutenants and late-game infected progression
Leviathan progression
Operator improvements
San Francisco North expansion work
RTS control improvements
Save/load and multiplayer stability improvements
Civilian Evacuation Progress
The evacuation system has reached a major gameplay milestone. Players can now complete the full civilian rescue loop from intake to evacuation, with supporting systems now coming online around it.
Functional intake processing
Evacuation buses
Infection scanning upgrades
Doctrine progression
Direct civilian movement into evacuation zones
Upgrades to streamline civilian processing
Options to skip holding cells
Improved evacuation efficiency as your operation grows
Infected Rework
The infected are also receiving a major pass as part of this phase of development. Infection spread has been rebalanced, infected structure construction is now visible before activation, and late-game pressure is being tuned to reduce the frustrating “whack-a-mole” feeling players were running into. Endless Horde Mode is also available as a custom option for players who want the infection to keep spreading forever.
What Comes Next
The next major push is about taking the systems now coming online and making them stronger, smarter, and more stable. Expect continued work on formation AI, infected behavior, new infected threats, Operator improvements, San Francisco North, evacuation polish, and the broader late-game progression loop. As always, Experimental builds may contain rough edges, bugs, and unfinished content. Player reports are extremely helpful as these systems continue moving toward the default branch.
🎙️ Next CERC HQ – Livestream Details
🕔 When: Weekly Saturdays – 7 PM EST (New Time!)
💬 What is CERC HQ:
Welcome to Cepheus Protocol HQ, your ultimate weekly briefing on all things Cepheus Protocol! Join the Halcyon Winds team as we explore the latest updates, reveal behind-the-scenes development stories, and answer community questions about the game. From exciting new features to design challenges, this is your all-access pass to the evolving world of Cepheus Protocol. Tune in every week and stay ahead of the outbreak!
Co-op Progress
Total Revamp based on Community Feedback
Level Design Updates
📺 Where to Watch:
🎤 Don’t miss our Live Q&A! We’ll be answering questions from the community during the stream.
📺 Missed a Stream? No Worries!
Spotify Podcast Archive (VODs may take 24 hours to appear)
Source
Changelog.gg summarizes and formats this update. How we read updates.