How many people are playing Cepheus Protocol right now?

Cepheus Protocol has 69 players on Steam right now, with a 24-hour peak of 117 and an all-time peak of 378 on Oct 2021.

What is the all-time peak player count of Cepheus Protocol?

378 concurrent players on Oct 2021.

When was Cepheus Protocol released on Steam?

Cepheus Protocol was released on Steam on 15 May 2020.

25,970,476 on Steam▼ 1,279,474 7,179,033 in-gameTop now Counter-Strike 2 513,603PICS #38,654,901187 builds todaySale Steam PvE Survival Crafting Festends 7 Sep Sampled 7 Sep 2026, 02:08 UTC

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Cepheus Protocol Full Details · SteamPeaks

Apps›Cepheus Protocol›Full details

Cepheus Protocol

GameApp ID 979,640by Halcyon WindsReleased 15 May 2020

WindowsEngine —

View on SteamCompare

Overview

Data

Price history Charts Patches Events Reviews Audience

App ID979,640

Release date15 May 2020

Engine—

Install size11.2 GB

TypeGame

Last update20 Aug 2026

Steam DeckPlayable

DLC7

DeveloperHalcyon Winds

Changenumber38,646,187

Price$19.99

Packages0

PublisherHalcyon Winds

SystemsWindows

Followers—

Depots8

Cepheus Protocol

Halcyon Winds
Released 15 May 2020·App 979640

Steam user reviews

Mostly Positive

75.4%· 3.8K reviews

Recent —

SteamPeaks Rating

75.3 Positive

Recent 30 days —

How it works ›

Playing now

−11 vs. yesterday

18%of peak

All-time peak

378

Oct 2021

Updated 2 minutes agoData by SteamPeaks.com

Estimates

Availability

Technical

Metadata Packages DLC7 Depots8 Requirements Install size Configuration Cloud saves

Content

Achievements Community Media Related apps

History

Update history Store history

Everything

Full details

Full details Overview Price history Charts Patches Events Reviews Audience Estimates Availability Metadata Packages DLC7 Depots8 Requirements Install size Configuration Cloud saves Achievements Community Media Related apps Update history Store history

Full details

Everything about Cepheus Protocol

Export CSVUpdated 6 Sep 2026, 16:53 UTC

Identity

Name

Cepheus Protocol

App ID

979,640

Type

Game

Developer

Halcyon Winds

Publisher

Halcyon Winds

Franchise

—

Availability

Release date

15 May 2020

Last update

20 Aug 2026, 04:25 UTC · 18 days ago

Last changenumber

38,646,187

Early Access

Yes

Family sharing

Eligible

Store page

Yes

Prices

Current price

$19.99

Lowest recorded

$19.99 · 3 Sep 2026

Other stores

Authorised stores after the IsThereAnyDeal key

Platforms and technology

Supported systems

Windows

Steam Deck

Playable

Controller

Partial Controller Support

Engine

—

Anti-cheat

—

Players

Players now

24-hour peak

117

All-time peak

378 · 1 Oct 2021

30-day average

Concurrent players rank

#3,392

Top sellers rank

—

Followers

—

Twitch viewers now

—

Reviews

Steam user reviews

Mostly Positive · 75.4% of 3,758

Recent reviews

—

SteamPeaks Rating

75.3

Content