text: This wiki serves as a resource for all Alien Swarm Titles, information on all versions can be found throughout this resource.
  - Main article: Alien Swarm Reactive Drop
  Alien Swarm: Reactive Drop is a standalone game which extends Alien Swarm through new maps, aliens, game modes, guns and most importantly Steam Workshop support.
  - Main article: Alien Swarm Source
  Alien Swarm is a game and Source SDK release from a group of talented designers at Valve who were hired from the Mod community.
  - Main article: Alien Swarm 2K4
  There is an older version of this game available. It is a modification of Unreal Tournament 2004, and has won the 'Make something unreal' contest back then. While it met with much appreciation and kept a small but steady player base, it is NOT what this wiki is about. Information and download links can be found at their website, where it is referred to as AlienSwarm2K4.
  Campaigns • Characters • Enemies • Equipment • Promotions • Skills • Weapons Background • Challenges • Console • Difficulty • Experience • Server setup • Speedrunning • Steam achievements • Strategy |