How many people are playing Sigma Theory right now?

Sigma Theory has 0 players on Steam right now, with a 24-hour peak of 5 and an all-time peak of 5 on 6 Sep 2026.

What is the all-time peak player count of Sigma Theory?

5 concurrent players on 6 Sep 2026.

Sigma Theory was released on Steam on 21 Nov 2019.

37,640,831 on Steam▼ 2,356,650 11,338,278 in-gameTop now Counter-Strike 2 1,182,164PICS #38,670,4331,774 builds todaySale Steam PvE Survival Crafting Festends 7 Sep Sampled 7 Sep 2026, 15:08 UTC

Sigma Theory Patches · SteamPeaks

Sigma Theory

Major patches only

Date	Day	Time	Patch title	Build ID	Branch	Depots	Download Δ
28 Oct 2020	Wed	12:42	No patch notes · unannounced build	5748425	beta	4	—
28 Oct 2020	Wed	12:42	No patch notes · unannounced build	5748425	public	4	—
24 May 2019	Fri	12:53	No patch notes · unannounced build	3854860	test-achievements	4	—

public branch · shipped todayother branchwide buildhas patch notes

Showing 3 of 3 builds · Δ is the compressed download for the public branch, available once the depot worker runsLoad older builds