cmss13 is an open source fork of Space Station 13 that adapts the game into a Colonial Marines-inspired setting. Developed and maintained by the cmss13 community, it emphasizes tactical combat, military roleplay, and survival against xenomorph threats. The repository includes the complete source code, sprites, maps, and configuration files needed to run servers or contribute to development. Compared to traditional SS13 forks, cmss13 introduces unique mechanics such as marine squads, advanced weaponry, and alien abilities, offering a combat-heavy multiplayer experience. The project thrives on active contributions from its community, ensuring continuous updates and balancing. It provides both a platform for immersive gameplay and an open development environment for fans of the SS13 ecosystem.

Features

  • SS13 fork with Colonial Marines-inspired gameplay
  • Focus on tactical combat and military roleplay
  • Includes unique maps, sprites, and weapons
  • Alien and marine mechanics for asymmetrical play
  • Full source code and server setup tools
  • Actively maintained by the cmss13 community

Project Samples

Project Activity

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Categories

Games

License

Affero GNU Public License, GNU General Public License version 3.0 (GPLv3)

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Additional Project Details

Operating Systems

Linux, Windows

Programming Language

JavaScript, Python, TypeScript

Related Categories

Python Games, JavaScript Games, TypeScript Games

Registered

2025-09-26