Cepheus Protocol

Cepheus Protocol

Halcyon Winds · May 15, 2020 · Sandbox, Zombies, RTS, Survival, Post-apocalyptic

Buy Cepheus Protocol from Gameseal at $12.47 — the cheapest of 4 stores we compare.

PC
Mostly Positive75% · 3,75927playing now
Best price 37 Fair price
$12.47-38%
lowest tracked $7.72
Gameseal Buy at Gameseal

Prices last checked

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Where to buy Cepheus Protocol — official stores

Steam
Steam
Standard Edition · Steam
$19.99
Buy
Epic Game Store
Epic Game Store
Standard Edition · Epic Games
$19.99
Buy

Cheapest Cepheus Protocol keys — keyshops

Keyshops are third-party marketplaces — keys are resold and can be region-locked or a different edition. Check the listing's region & edition before buying.

Gameseal
Standard Edition · Steam
$12.47
Buy
Driffle INC
Standard Edition · Steam
$17.71
Buy

Some store links are affiliate links — playze may earn a commission at no extra cost to you. It never changes the price you pay, and the cheapest option is always shown in the Best price box above.

Cepheus Protocol price by region

Cepheus Protocol costs €10.78 in Europe (EUR), $12.47 in the United States, £13.36 in the United Kingdom, $19.99 in Georgia (USD), CA$22.99 in Canada, NZ$26.49 in New Zealand, A$27.99 in Australia, R$52.99 in Brazil and zł68.06 in Poland right now.

Cheapest Cepheus Protocol offer in each region, in local currency
RegionBest priceOfficial storeKey shopStores
Europe (EUR) €10.78 −40% €17.99 €10.78 4
United Statesyour region $12.47 −38% $19.99 $12.47 4
United Kingdom £13.36 −16% £15.99 £13.36 3
Georgia (USD) $19.99 $19.99 — 2
Canada CA$22.99 CA$22.99 — 2
New Zealand NZ$26.49 NZ$26.49 — 2
Australia A$27.99 A$27.99 — 2
Brazil R$52.99 R$52.99 R$92.51 3
Poland zł68.06 −19% zł84.00 zł68.06 3

Each row is a real price from that region's own stores, not a currency conversion, so the figures are not directly comparable. Switch regions in the header to shop the one you buy in.

Screenshots

About Cepheus Protocol

✦ AI summary

Command CERC forces across the Bay Area in this hybrid RTS-shooter where you defend your aircraft carrier base and battle infected hordes that can turn your own units against you. Tackle the Pangu Virus pandemic solo or with up to 16 players in co-op, blending real-time strategy commanding with third-person combat while researching the alien pathogen and hunting down Patient Zero.

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

Cepheus Protocol — game info

Platforms
Windows
Steam Deck
Playable
Player modes
Single-player, Online co-op
Controller
Partial controller support
PC Game Pass
Not included

DLC & expansions

🎁 Complete the collection

Base game + 5 of 7 DLC at today's best prices (some DLC unpriced).

$31.42
to own everything

What Steam players say

Recent verbatim reviews from Steam — separate from playze.io community reviews below.

Recommended Sep 7, 2026
Highly addicting. An overwhelming Challenge!
1 found this helpful
Not recommended Sep 4, 2026
I had hopes...
1 found this helpful
Recommended Sep 4, 2026
Learning curve is steep, with little to no help, but overall the game is worth it, just wish there was a tutorial
1 found this helpful
Recommended Sep 1, 2026
great game and keeps getting better
1 found this helpful
Recommended Sep 7, 2026
would be better with a tutorial
Recommended Sep 1, 2026
over hated ganky glitch but and i tried to extract suvilians but it not possible combats good but games super laggy if you dont have a op pc

Community reviews

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