CM-SS13

About

CM-SS13 is a multiplayer role playing shooter game with a horror theme. It was developed by CM-SS13 Devs and was released on February 6, 2026. It received mostly positive reviews from players.

The year is 2182. High Command has dispatched the USS Almayer to the frontier. You are a member of the Falling Falcons - 2nd Company, 2nd Battalion, 4th Brigade. Your orders are simple: Respond to an unknown distress signal, secure the colony, and neutralise any threats. But on the rim of known space, nothing is ever simple. BYOND: Build Your Own Net DreamBuilt on the ancient, accursed, yet st…

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72%

Audience ScoreBased on 104 reviews

gameplay5 positive mentions

stability1 negative mentions

Extremely deep and complex gameplay with a huge variety of roles and strategic team-based asymmetric PvP between Marines and Xenomorphs.
Highly rewarding for dedicated players who invest time to master the unique controls and gameplay systems.
Strong, dedicated community of players and mentors willing to help new players, with frequent updates and active open-source development.

Very steep learning curve with outdated, unintuitive UI and control systems making it difficult for new players to get into.
Frequent reports of problematic staff and administration including allegations of favoritism, toxic moderation, harassment, and censorship harming player experience.
Technical issues such as lag, crashes, and an aging game engine negatively impact gameplay, along with a polarizing and sometimes toxic community environment.

gameplay
28 mentions Positive Neutral Negative
18%
71%
11%
The gameplay offers deep, complex mechanics with a steep learning curve and strong replayability, centered around asymmetric team dynamics between marines and xenomorphs. It combines strategic coordination, roleplay, and sci-fi elements, appealing especially to dedicated players who enjoy emergent and evolving mechanics. However, UI challenges, inconsistent leadership, and occasional imbalance may hinder the experience for some.
- “It's a game with true depth to its gameplay and design (and some of it might even be intentional!).”
- “CM-SS13 is a descendant of the cult classic game SS13, and inherits many elements, spinning the engine from a social deduction murder mystery experience into an asymmetric TDM game with unbelievable depth and variety in its mechanics and their interactions.”
- “It's also completely open source, community coded and administrated. This means the game is always mechanically changing, making it incredibly addictive; there's almost always enough new stuff to draw you back in with the joy of discovery.”
- “There is a quick guide here, and it says before this quick guide you should read the introduction and other guides and controls, and they are hidden behind browser links and wikis that say you should read this and that guide, and you go read them and it says it is an old guide and useless and and and and... I'm from the 80s + 90s era of gaming, so this wall of text should not intimidate me, but this did.. you are fighting against the UI, gameplay, tutorials, but you are not in the game fighting "the monsters" or whatever...”
- “Is just stupid how unless you have 40 macros set up and 3 wifi routers, you can’t win as a moba xeno, combo gameplay completely ruins xenos and doesn’t work in ss13 at all.”
- “This game aint working on a 20 year old 2D space man game that turns into a PowerPoint slideshow after 10 minutes of gameplay.”
graphics
5 mentions Positive Neutral Negative
60%
20%
20%
The graphics are characterized by a pixelated, retro aesthetic that some players appreciate but others find off-putting, making it an acquired taste. While visually nostalgic, the UI and graphical presentation can feel outdated and may deter new players at first. Overall, the graphics contribute to the game's niche appeal but are not universally praised.
- “Overall great game, the graphics and UI are definitely an acquired taste though.”
- “I think that I have had less lag and also the graphics have improved tenfold.”
- “It's great fun, but there are visible individual pixels on the screen; however, the aesthetic is used quite well.”
story
2 mentions Positive Neutral Negative
100%
The story incorporates role-playing elements that enable collaborative storytelling, adding depth to the experience. Players can assume roles such as a researcher, unlocking new chemicals and equipment to support the mission.
- “On top of this, there are also role-play elements present, which allow for collaborative storytelling that you might end up liking.”
- “You can play as a researcher, trying to unlock new chemicals and equipment to aid the mission.”
replayability
1 mentions Positive Neutral Negative
100%
Replayability is high due to the engaging gameplay loop and sci-fi military roleplay, but the game features a steep difficulty barrier that may challenge new players.
stability
1 mentions Positive Neutral Negative
100%
The game's stability is inconsistent, with frequent bugs and a generally unpolished experience typical of classic SS13 titles.
- “It's also, in classic SS13 style, perpetually in a state of unpolished bugginess.”
music
1 mentions Positive Neutral Negative
100%
The music in the game is directly recreated from the original films and licensed games, contributing to an authentic and immersive atmosphere that closely mirrors the source material.