EN MAR 2, 2026
2 min read

Guide

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Quick Summary

CM-SS13 is a complex 2D asymmetric multiplayer game inspired by the Alien franchise, where players choose to be either United States Colonial Marines or Xenomorphs. New players should start by downloading the game via Steam, thoroughly reading the server rules, and utilizing the in-game tutorial and mentor help system (F1) to understand basic mechanics and communication. Effective teamwork, communication, and understanding your chosen role's objectives are crucial for success in rounds that can last up to three hours.

Navigation Index
  • 01 What is CM-SS13?
  • 02 Getting Started
  • 03 Basic Gameplay Mechanics
  • 04 Marine Faction Guide
  • 05 Xenomorph Faction Guide
  • 06 General Tips for New Players

CM-SS13 Beginner's Guide: Navigating the Alien-Inspired Asymmetric Multiplayer

Welcome to CM-SS13, a heavily modified server of Space Station 13 that draws its inspiration from the iconic Alien film franchise. This guide will provide new players with essential information to get started and navigate the complex gameplay of CM-SS13.

What is CM-SS13?

CM-SS13 is a 2D game built on the BYOND engine, known for its intricate systems and depth despite its seemingly basic appearance. It operates as an asymmetric multiplayer game where players primarily take on the roles of either the United States Colonial Marines (USCM) or the Xenomorphs. The core objective for the Marines is to eradicate the Xenomorph hive, while the Xenomorphs aim to overpower the Marines. The game also incorporates strong roleplaying and sandbox elements.

Getting Started

To begin your CM-SS13 journey, follow these steps:

Downloading CM-SS13

The easiest way to acquire CM-SS13 is by downloading it through Steam. Once the launcher is installed, you can select a server and log in using your Steam account without additional setup.

Reading the Rules

Before diving into gameplay, it is imperative to read all server rules. Failing to do so can lead to a ban, and

[ System Notice ]

This content was generated by AI. Information may be unverified and could have changed due to game updates. Verify critical data before proceeding.