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Game data by IGDB. Every price is a real observation, shown with the time we saw it.

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Cepheus Protocol

Cepheus Protocol

Release dateMay 15, 2020
Ratings & reviews
Find patient zero before an alien virus takes over San Francisco and the cepheus protocol is enacted. Command your squad, save civilians, and stop the Pangu virus. Kill patient zero and save the world.
AdventureIndieActionCo-operativeReal Time Strategy (RTS)

Media & gameplay showcase

Trailer
1 / 9

Best Price Right Now

$15.99
Steam
Purchase
Observed 18 hours ago

Historical Low

$15.99
Steam
Observed Aug 28, 2026

Edition / bundle

Available at 2 stores Ā· 3 editions / bundles

Settings

Compare Prices

Cepheus Protocol

Store Link
Steam
$15.99
$19.99
Observed 18 hours ago
-20%Sale ends Oct 8, 2026
Purchase
Epic Games Store
$19.99
Observed 8 hours ago
0%
Purchase
  • Steam
    $15.99
    $19.99
    Observed 18 hours ago
    -20%Sale ends Oct 8, 2026
    Purchase
  • Epic Games Store
    $19.99
    Observed 8 hours ago
    0%
    Purchase

Cepheus Protocol Origins Edition

Store Link
Steam
$28.03
$35.05
Observed 18 hours ago
-20%Sale ends Oct 8, 2026
Purchase
  • Steam
    $28.03
    $35.05
    Observed 18 hours ago
    -20%Sale ends Oct 8, 2026
    Purchase

Upgrade to "Supporter Edition"

Store Link
Steam
$22.76
$28.46
Observed 18 hours ago
-20%Sale ends Oct 8, 2026
Purchase
  • Steam
    $22.76
    $28.46
    Observed 18 hours ago
    -20%Sale ends Oct 8, 2026
    Purchase

Price History

ObservedEpic Games Store Ā· USDSteam Ā· USD
42 days ago$19.99ā€”
38 days ago$19.99$15.99
19 days ago$19.99$19.99
18 hours ago$19.99$15.99

About Cepheus Protocol

Find patient zero before an alien virus takes over San Francisco and the cepheus protocol is enacted. Command your squad, save civilians, and stop the Pangu virus. Kill patient zero and save the world.

Downloadable Content

6 catalog add-ons
6 DLCs
  • Cepheus Protocol Novel
    Cepheus Protocol NovelAdd-on
    2020
    -20%$4.99
    $3.99
  • Cepheus Protocol Digital Art Book
    Cepheus Protocol Digital Art BookAdd-on
    2022
    -20%$4.99
    $3.99
  • Cepheus Protocol - Support Pack Vehicle Camo NATO Collection
    Cepheus Protocol - Support Pack Vehicle Camo NATO CollectionAdd-on
    2023
    -20%$3.99
    $3.19
  • Cepheus Protocol - Support Pack Vehicle Camo Modern Collection
    Cepheus Protocol - Support Pack Vehicle Camo Modern CollectionAdd-on
    2023
    -20%$2.99
    $2.39

Game details

Release date
May 15, 2020
Developer
Halcyon Winds
Publisher
Halcyon Winds
Platforms
PC (Microsoft Windows)
Genres
Adventure, Indie, Real Time Strategy (RTS), Simulator, Strategy
Themes
Action, Survival
Game modes
Co-operative, Multiplayer, Single player
Player perspective
N/A
Languages
LanguageAudioInterfaceSubtitles
Chinese (Simplified)
English
French
German
Japanese
Korean
Age ratings
CLASS_IND: 18, PEGI: 18, USK: 18, ESRB: M
Steam Deck Compatibility
Playable

System requirements

Minimum
OS
N/A
CPU
N/A
GPU
N/A
Memory
N/A
Storage
N/A
Recommended
OS
N/A
CPU
N/A
GPU
N/A
Memory
N/A
Storage
N/A

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