How many people are playing CM-SS13 right now?

CM-SS13 has 17 players on Steam right now, with a 24-hour peak of 38 and an all-time peak of 51 on May 2026.

What is the all-time peak player count of CM-SS13?

51 concurrent players on May 2026.

When was CM-SS13 released on Steam?

CM-SS13 was released on Steam on 6 Feb 2026.

CM-SS13

Every achievement on record

Achievements

12 achievements

RarestClose the incisions!1.4% of players

Most earnedHere's your rifle and helmet, boot.6.4% of players

Enter into this world violently.
Burst as a Xenonid
3.4%
A violent triumph, or a miserable failure?
Complete a round as a Marine
5.2%
Here's your rifle and helmet, boot.
Enlist with the USCM
6.4%
Gotta keep moving.
Help someone up
4.7%
Our most typical group of marines.
Join as an Alpha squad member
4.4%
The most diligent of architects and engineers.
Join as a Bravo squad member
4.8%
The purple squad of friendly faces.
Join as a Charlie squad member
4.6%
Relentless and bloodthirsty, the head of the charge.
Join as a Delta squad member
3.7%
Close the incisions!
Join as a Doctor
1.4%
Pick up that can.
Join as a member of the Military Police
1.4%
Close one.
Surgically remove a nesting larva
1.5%
Always go rock.
Win at Rock Papers Scissors
1.6%

Names, descriptions and icons are the game’s own, as Steam publishes them; the share is how many owners have unlocked each, from Steam's global figures for 12 of them.