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This website stores descriptions and URLs for Alien Swarm addons. The primary goal of this website is to serve as stable location from where users can download addons for Alien Swarm. If you're an author of any Alien Swarm addon and you need a stable homepage for your addon, contact:

You will get access to edit this website.

Useful links:

Community Hub

Store Page

Steam Forums

At ModDB

At GameBanana

At Swarm Armory

Steam group Alien Swarm Mods and Campaigns

Icy Dawn(updated map)