Jul 19, 2010 · Alien Swarm is a game and Source SDK release from a group of talented designers at Valve who were hired from the Mod community. Available free of charge, the game thrusts players …

In July 2010 with the announcement of Alien Swarm, it was revealed that Valve had hired the team behind Alien Swarm, who had finished the mod between working on other Valve products such as …

The wiki is dedicated to covering all aspects of Alien Swarm including classes, weapons, equipment, skills, aliens, maps, strategy, walkthroughs, cheats, achievements, and more!

Nov 1, 2025 · Alien Swarm: Reactive Drop. Tactical, 8 player co-op action game with a top-down perspective. Available on Steam for free!

Sep 24, 2025 · Discover the latest updates on Alien Swarm – news, upcoming releases, and in-depth walkthroughs. Stay ahead with expert reviews, guides, and exclusive gaming insights.

Oct 26, 2025 · Co-operative multiplayer game and complete code base available for free. Alien Swarm Steam charts, data, update history.

Jul 6, 2025 · Blast aliens, grab power-ups, and fight epic bosses in this fun arcade shooter!”

Alien Swarm: Reactive Drop Co-operative top-down shooter game available for free. An epic bug hunt featuring a unique blend of co-op play and squad-level tactics.

Alien Swarm - Alien Swarm is a game and Source SDK release from a group of talented designers at Valve who were hired from the Mod community. Available free of charge, the game thrusts players …

With your friends, form a squad of four distinct IAF Marine classes. Plan your attack using an unlockable arsenal of weapons with countless loadout configurations against a wide variety of aliens. Blaze your …