Skip to content
POPULAR TODAY Battlefield™ 6 Open Beta Battlefield™ 2042 Battlefield™ 1 PEAK Battlefield™ 6 Marvel Rivals
Enter Submit to view all results. Ctrl+Enter View and filter in instant search.
Close ×
Search powered by Algolia

Cepheus Protocol

Wishlist Follow Ignore Install Unwatch Watch
App ID 979640
App Type Game
Developer
Publisher Halcyon Winds
Franchise Cepheus Protocol
Supported Systems Windows
Technologies Unreal Engine, EpicOnlineServices SDK
Last Changenumber 30642133
Last Record Update 18 August 2025 – 01:47:03 UTC ()
Release Date 15 May 2020 – 07:47:00 UTC ()
😏 75.64%
3k reviews
91
In-Game
+12
🧱 Sandbox 🧟 Zombies 🌐 RTS 🌲 Survival ☢️ Post-apocalyptic

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.

Steam price history

Week Long Deal, offer ends 18 August 2025 – 17:00:00 UTC
Current Price $15.99 at -20%
Lowest Recorded Price $9.89 at -34% 29 October 2020
Currency Current Price Converted Price Lowest Recorded Price
U.S. Dollar $15.99 at -20% $15.99 $9.89 $9.89 at -34%
South Asia - USD $6.55 at -20% $6.55 -59.04% $4.61 $4.61 at -34%
Russian Ruble 568 ₽ at -20% $7.05 -55.87% $2.94 237 ₽ at -34%
Kazakhstani Tenge 4160₸ at -20% $7.72 -51.71% $2.94 1584₸ at -34%
Vietnamese Dong 208000₫ at -20% $7.91 -50.49% $4.14 109000₫ at -34%
Ukrainian Hryvnia 332₴ at -20% $8.05 -49.63% $3.66 151₴ at -34%
Indian Rupee ₹ 704 at -20% $8.06 -49.58% $3.45 ₹ 302 at -34%
Indonesian Rupiah Rp 132799 at -20% $8.19 -48.77% $3.90 Rp 63359 at -34%
South African Rand R 148.00 at -20% $8.37 -47.60% $3.92 R 69.30 at -34%
CIS - U.S. Dollar $8.39 at -20% $8.39 -47.53% $5.60 $5.60 at -34%
LATAM - U.S. Dollar $8.39 at -20% $8.39 -47.53% $8.39 $8.39 at -20%
MENA - U.S. Dollar $8.39 at -20% $8.39 -47.53% $8.39 $8.39 at -20%
Chinese Yuan ¥ 60.80 at -20% $8.46 -47.08% $4.59 ¥ 33 at -34%
Philippine Peso ₱492.00 at -20% $8.63 -46.02% $4.51 ₱257.36 at -34%
Chilean Peso CLP$ 8400 at -20% $8.70 -45.57% $4.37 CLP$ 4224 at -34%
Taiwan Dollar NT$ 262 at -20% $8.71 -45.48% $5.85 NT$ 176 at -34%
Saudi Riyal 32.76 SR at -20% $8.73 -45.40% $5.26 19.76 SR at -34%
Kuwaiti Dinar 2.68 KD at -20% $8.76 -45.16% $6.02 1.84 KD at -34%
Brazilian Real R$ 47,99 at -20% $8.85 -44.64% $3.52 R$ 19,13 at -34%
Malaysian Ringgit RM39.20 at -20% $9.28 -41.94% $5.00 RM21.12 at -34%
Colombian Peso COL$ 38000 at -20% $9.45 -40.88% $4.10 COL$ 16500 at -34%
Qatari Riyal 35.19 QR at -20% $9.65 -39.60% $6.15 22.43 QR at -34%
Peruvian Sol S/.34.40 at -20% $9.67 -39.51% $5.75 S/.20.46 at -34%
Mexican Peso Mex$ 182.39 at -20% $9.70 -39.28% $5.44 Mex$ 102.29 at -34%
Thai Baht ฿320.00 at -20% $9.84 -38.42% $4.85 ฿157.74 at -34%
Singapore Dollar S$14.80 at -20% $11.52 -27.92% $7.45 S$9.57 at -34%
U.A.E. Dirham 42.40 AED at -20% $11.54 -27.80% $7.54 27.72 AED at -34%
Uruguayan Peso $U476 at -20% $11.87 -25.71% $5.41 $U217 at -34%
South Korean Won ₩ 17200 at -20% $12.39 -22.47% $7.37 ₩ 10230 at -34%
Japanese Yen ¥ 1840 at -20% $12.45 -22.12% $6.78 ¥ 1003 at -34%
Hong Kong Dollar HK$ 100.00 at -20% $12.79 -20.01% $6.41 HK$ 50.16 at -34%
Costa Rican Colon ₡6800 at -20% $13.46 -15.82% $8.49 ₡4290 at -34%
New Zealand Dollar NZ$ 23.19 at -20% $13.73 -14.10% $7.22 NZ$ 12.20 at -34%
Canadian Dollar CDN$ 20.79 at -20% $15.04 -5.89% $8.35 CDN$ 11.54 at -34%
Australian Dollar A$ 23.60 at -20% $15.32 -4.17% $9.21 A$ 14.19 at -34%
Norwegian Krone 176,00 kr at -20% $17.25 +7.90% $6.66 67,98 kr at -34%
Israeli New Shekel ₪59.16 at -20% $17.49 +9.43% $10.92 ₪36.92 at -34%
British Pound £13.40 at -20% $18.11 +13.29% $10.15 £7.51 at -34%
Euro 15,60€ at -20% $18.20 +13.83% $9.61 8,24€ at -34%
Polish Zloty 73,59zł at -20% $20.21 +26.44% $9.78 35,63zł at -34%
Swiss Franc CHF 17.59 at -20% $21.80 +36.35% $12.67 CHF 10.23 at -34%
Valve suggested prices are shown on package pages.

Price history

Initializing price history graph…

Click on a currency name to load price history for that particular currency.
View lowest recorded prices on Steam store pages by using our browser extension.

Additional Information

Developer Halcyon Winds
controller_support partial
community_visible_stats Yes
workshop_visible Yes
DLCAvailableOnStore Yes
ReleaseState released
Publisher Halcyon Winds
eulas
0 ↴
id979640_eula_0
nameCepheus Protocol EULA
urlhttps://store.steampowered.com//eula/979640_eula_0
version6
Store Release Date 15 May 2020 – 07:47:36 UTC ()
osarch 64
community_hub_visible Yes
AbsoluteMouseCoordinates Yes
Social Media https://discord.gg/hYzMx3JgDN
https://www.facebook.com/CepheusProtocol/
https://www.twitch.tv/halcyonwinds
https://x.com/CepheusProtocol
https://www.youtube.com/channel/UC0eBJIGecAjqbAcJk3IajoQ/
Primary Genre Strategy (2)
Store Genres Action (1), Adventure (25), Indie (23), Simulation (28), Strategy (2), Early Access (70)
Steam Release Date 15 May 2020 – 07:47:00 UTC ()
Store Asset Modification Time 28 June 2025 – 17:04:15 UTC () (1751130255)
library_assets
library_capsuleen
library_heroen
library_logoen
logo_position ↴
pinned_positionBottomLeft
width_pct100
height_pct37.887382340973815
osextended empty string
review_score 6
review_percentage 78
RemotePlayTogetherTestingBranches default
Detected Technologies (?) Unreal Engine, EpicOnlineServices SDK, Intel_OID SDK, Intel_oneTBB SDK, NVIDIA_Nsight_Aftermath SDK, Ogg SDK, Vorbis SDK, XAudio2 SDK
Steam Deck Compatibility
  • Steam Deck:
  • Some functionality is not accessible when using the default controller configuration, requiring use of the touchscreen or virtual keyboard, or a community configuration
  • This game sometimes shows mouse, keyboard, or non-Steam-Deck controller icons
  • Entering some text requires manually invoking the on-screen keyboard
  • Some in-game text is small and may be difficult to read
  • This game requires manual configuration of graphics settings to perform well on Steam Deck
  •  
  • SteamOS:
  • This game runs successfully on SteamOS
  • Note: Entering some text requires manually invoking the on-screen keyboard
  • Note: Some functionality is not accessible when using the default controller configuration, requiring use of the touchscreen or virtual keyboard, or a community configuration
  •  
  • category: Playable
  • steamos_compatibility: Compatible
  • test_timestamp: 25 May 2023 – 00:00:00 UTC
  • tested_build_id: 11270075
  • configuration:
    supported_inputgamepad
    requires_manual_keyboard_invoke1
    requires_non_controller_launcher_nav0
    primary_player_is_controller_slot_00
    non_deck_display_glyphs1
    small_text1
    requires_internet_for_setup0
    requires_internet_for_singleplayer0
    recommended_runtimeproton-8.0-2
    requires_h2640
    requires_voice_files0
    gamescope_frame_limiter_not_supported0
    hdr_support0
Content Descriptors Frequent Violence or Gore (2), General Mature Content (5)
controllertagwizard Yes
Early Access Release Date 15 May 2020 – 00:00:00 UTC ()
First seen on SteamDB 8 November 2018 – 08:23:52 UTC (), in changelist #5354722
Content Descriptors (Including DLC) Frequent Violence or Gore (2), General Mature Content (5)

Supported Languages

9 Languages Interface Full Audio Subtitles
English Yes Yes
Simplified Chinese Yes
Korean Yes
German Yes
Japanese Yes
Russian Yes
Spanish - Spain Yes
Portuguese - Portugal Yes
French Yes

Assets

Load all asset images
clienticon 37c2f3cbfd4b44cfa88c7815fb4902ebb5d569e2
clienttga 28cbff32772d43a0232e23db730c6c2785b484bc
icon 9b2731c597997e70f9e4bcfcba17829218cf3fa7
logo 442574f6127ef08518c4c25f0c1ad131b9d821f2
logo_small 442574f6127ef08518c4c25f0c1ad131b9d821f2_thumb
small_capsule
englishcapsule_231x87.jpg
header_image
englishheader.jpg
library_assets_full
library_capsule ↴
image/englishlibrary_600x900.jpg
library_hero ↴
image/englishlibrary_hero.jpg
library_logo ↴
logo_position/pinned_positionBottomLeft
logo_position/width_pct100
logo_position/height_pct37.887382340973815
image/englishlogo.png
Assets
main_capsulecapsule_616x353.jpg
small_capsulecapsule_231x87.jpg
headerheader.jpg
page_backgroundpage_bg_generated_v6b.jpg
hero_capsulehero_capsule.jpg
library_capsulelibrary_600x900.jpg
library_herolibrary_hero.jpg
community_icon9b2731c597997e70f9e4bcfcba17829218cf3fa7.jpg
page_background_pathapp/979640
raw_page_backgroundpage_bg_raw.jpg
timestamp28 June 2025 – 17:05:06 UTC
Trailers
256822296 ↴
trailer_nameCepheus Protocol Exodus Trailer
trailer_category1
trailer_480p/video/webm256822296/movie480_vp9.webm
trailer_480p/video/mp4256822296/movie480.mp4
trailer_max/video/webm256822296/movie_max_vp9.webm
trailer_max/video/mp4256822296/movie_max.mp4
microtrailer/video/webm979640/347595/c1803967073994f1cd72de53852478743b52bc40/1751171611/microtrailer.webm
microtrailer/video/mp4979640/347595/c1803967073994f1cd72de53852478743b52bc40/1751171611/microtrailer.mp4
screenshot_medium256822296/movie.293x165.jpg
screenshot_full256822296/movie_full.jpg
trailer_base_id347595
all_agestrue
is_highlighttrue
timestamp1718390752
256918749 ↴
trailer_nameCepheus Protocol Uprising Trailer
trailer_category1
trailer_480p/video/webm256918749/movie480_vp9.webm
trailer_480p/video/mp4256918749/movie480.mp4
trailer_max/video/webm256918749/movie_max_vp9.webm
trailer_max/video/mp4256918749/movie_max.mp4
microtrailer/video/webm979640/518246/3ca0674260b2a2cee0ae49284f6173c3dd7b8597/1751171612/microtrailer.webm
microtrailer/video/mp4979640/518246/3ca0674260b2a2cee0ae49284f6173c3dd7b8597/1751171612/microtrailer.mp4
screenshot_medium256918749/movie.293x165.jpg
screenshot_full256918749/movie_full.jpg
trailer_base_id518246
all_agestrue
timestamp1718390757
Ad-free Steam data for everyone since 2012
Support SteamDB • Donate or contribute
Open link