PC $19.99 Region US
Games Action Cepheus Protocol
Mature content
Action · Halcyon Winds

Cepheus Protocol

Cepheus Protocol
Mature content
Steam Deck Playable Windows
Mostly Positive · 76% of 3,648
DeveloperHalcyon Winds
GenreAction
ControllerPartial
Wait Chip's verdict · US updated 8 min. ago

Good game, but it sits 100% of the way from its all-time low to full price. It drops harder in seasonal sales. Patience pays.

Why this verdict
Price position between all-time low and full price 100%
All-time low $15.99 · 15d ago
Player reviews 76% positive of 3,648
Quality score 76/100
Value score 0/100

Offers

Accepted regional prices from official stores

Official stores (1)
steam
checked 8 min. ago Best price
steam, Official, $19.99
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Purchase options (1)

Steam packages and bundles that include this game

DLC (8)

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Packs and bundles (2)

Multi-item packages that include this game

About this game

What this game is, in the developer's words

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.

Special Announcement: Opt Into Cepheus Protocol Experimental Builds

Be the first to experience cutting-edge features and updates by opting into Cepheus Protocol branch 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.

  • Right click and go to properties

  • Go to Game Version & Betas and choose experimental

  • Install and have fun!


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.

  • Co-Op Multiplayer up to 16 players in true RTS/TPS hybrid combat!
    Share control of CERC operations with up to 16 players. Pool resources, coordinate tactics, and fight as a team against the infection.

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  (Legacy Only Coming in Q2 to rebuild)
    Interact with rogue civilian groups. Recruit them to your cause, negotiate alliances, or defend yourself from hostile factions.

  • Civilian Evacuation (Legacy Only Coming in March to rebuild)
    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 Lieutenants
    Stop the infection from spreading by targeting its leaders. Destroy their expanding hordes before they consume every province.

  • Dynamic Provincial Events
    Encounter unexpected challenges as rogue civilian combatants and infected groups form dynamically across the map. Your reputation and decisions will shape the world around you.

  • Enhanced Operator Customization
    Tailor weapons, abilities, and appearance. Drive vehicles, gain progression perks, and refine your playstyle for maximum impact.

Planned Features

  • DNA Research System
    Develop a proper progression tree to counter the virus, protect your units, and evolve your strategies.

  • Canon Campaign Mode
    Experience the official Cepheus Protocol story, inspired by the novel and side stories

Media

Trailers and screenshots straight from the store page

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Mature content
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Mature content
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Mature content

Price intelligence

Accepted price history and the lows that matter

Historical lows
All-time low ATL $15.99 2026-06-27
3-month low $15.99
12-month low $15.99
Current $19.99
Price events From the accepted price history · updates automatically
Jul 9, 2026
Sale ended · back to $19.99
Jun 27, 2026
New all-time low $15.99

Cepheus Protocol price history and best deals

Cepheus Protocol for PC currently sells from $19.99 at authorized stores. Its all-time low is $15.99, set on 2026-06-27.

Frequently asked questions

Answered from this game's own price and edition data

Should I buy Cepheus Protocol now or wait?
Our verdict is wait. At 100% of the way to full price, it usually drops harder in seasonal sales, so patience tends to pay.
Is $19.99 a good price for Cepheus Protocol?
$19.99 sits 100% of the way from the all-time low of $15.99 to the full price. It has been cheaper before, so there is room to wait.
Where can I buy Cepheus Protocol?
Cepheus Protocol is tracked at steam. We only list authorized stores here and always link out with a clean outbound link.
Scores
Steam reviews Mostly Positive · 76%
76% positive of 3,648
Media (41)
Tech
Steam DeckPlayable
SteamOSSupported
ControllerPartial
Requirements
System requirements platform
Minimum
Minimum:
  • Requires a 64-bit processor and operating system
  • OS: Windows 10/11 (64-bit)
  • Processor: Intel® Core™ i5-4500K
  • Memory: 8 GB RAM
  • Graphics: NVIDIA GeForce 1060 GTX or AMD Radeon Equivalent 4 GB
  • DirectX: Version 12
  • Storage: 8 GB available space
  • Sound Card: Direct X Compatible
  • Additional Notes: **recommended SSD install for optimal performance
Recommended
Recommended:
  • Requires a 64-bit processor and operating system
  • OS: Windows 10/11 (64-bit)
  • Processor: Intel® Core™ i7-6770K / AMD Ryzen 5 1500X
  • Memory: 16 GB RAM
  • Graphics: NVIDIA GeForce 2060 GTX or AMD Radeon Equivalent 6GB VRAM
  • DirectX: Version 12
  • Storage: 8 GB available space
  • Sound Card: Direct X Compatible
  • Additional Notes: **recommended SSD install for optimal performance
Minimum
Minimum:
    Recommended
    Recommended:
      Minimum
      Minimum:
        Recommended
        Recommended:
          Facts
          DeveloperHalcyon Winds
          PublisherHalcyon Winds
          ModesMulti-player · Single-player · Co-op
          Links
          Ratings
          dejus14
          igrs18
          steam_germany16
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