Special Announcement: Opt Into Cepheus Protocol Experimental Builds Be the first to experience cutting-edge features and updates by opting into Cepheus Protocol Experimental Builds ! What You'll Get: Early access to new gameplay mechanics, systems, and features. A chance to provide feedback that shapes the future of Cepheus Protocol. A sneak peek at upcoming content and improvements before they hit the main build. How to Opt-In: Buy/Own the Base Game of Cepheus Protocol Go to your Steam Library. Search for Cepheus Protocol Experimental Branch . Install and have fun! Roadmap Explore the future of Cepheus Protocol ! Discover upcoming features like Doctrines , the DNA Research System , Operator Units , and Co-op Mode . Stay informed with all updates by visiting our full roadmap on our website. About the Game An Open World RTS Military Survival Game. Command CERC (Center for Epidemic Research and Control) to stop a pandemic-level event from consuming the Bay Area. The Pangu Virus threatens humanity as it spreads, turning native inhabitants into infected, relentless swarms. Can you adapt, survive, and reclaim control? Hardcore RTS Military Combat Meets Survival Horror Aircraft Carrier Operations Your mobile base of operations in Pandemic Mode. If it’s destroyed, you lose. Defend it at all costs and utilize Winters, now a rebuildable hero, to lead your forces. A New Threat Rises Battle infected hordes that can infect and turn your own units. Command land, sea, and air forces to hold the line in this unforgiving world. Dynamic Gameplay Systems Command the Operator Control the battlefield in Third-Person Shooter mode or use the Operator as a hero unit in RTS mode. Adapt your strategies to survive. Doctrine Tree Progression Unlock new support options, powerful weapons, and unique units by leveling up through the Doctrine tree. Customize Pandemic Mode Create your perfect challenge. Turn off infected types, adjust gameplay options, and create custom scenarios to tailor the experience. Character Progression Improve your characters’ health and targeting efficiency as they gain experience through combat. Innovative Mechanics and Features Line of Sight and Hearing AI Experience cutting-edge AI that hunts your units based on what they can see and hear. Stay stealthy, or face overwhelming swarms. Massive, Detailed Maps Explore sprawling urban environments filled with varied locales. Plan every attack, defense, and civilian evacuation carefully to ensure survival. Dynamic Civilian Diplomacy Interact with rogue civilian groups. Recruit them to your cause, negotiate alliances, or defend yourself from hostile factions. Civilian Evacuation Manage who lives and dies with an intricate Civilian Administration Structure. Customize your intake system or use preset templates to make critical decisions. Destroy the Infection Research the Pangu Virus Delve into the secrets of the alien pathogen and find a way to kill Patient 0 before it’s too late. Hunt Patient 0 and Their Li