Alien Swarm from Valve is free download on Steam now. Created by community modders

Alien Swarm Steam screenshot. Out now for free
You can now get Alien Swarm from Valve for free on Steam!

The game is an all-new title from the company created by modders who were hired by Valve and worked on the game in-between their other big projects. The game is an awesome-looking top-down four-player co-op shooter much like Contra or Smash TV where you take on waves of enemy aliens and blast them to smithereens.

“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 into an epic bug hunt featuring a unique blend of co-op play and squad-level tactics. 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 way through an overrun, off-world colony, eradicating the alien infestation in environments ranging from the icy planet’s surface, to a subterranean lava-flooded mining facility.

Along with the game get the complete code base for Alien Swarm that features updates to the Source engine as well as the SDK. Alien Swarm adds 3rd person camera, depth of field, improved dynamic shadows and a wide variety of gameplay additions to the Source engine.”

Here is a trailer.

Key features of Alien Swarm include:

* Tactical, 4 player co-op action game with a top-down perspective
* Complete game code and mod tools
* Unlock persistent items by gaining levels
* Over 40 weapons and equipment with countless loadout configurations
* 4 unique classes and 8 unique characters
* Matchmaking, Steam Cloud, Steam Stats
* 64 achievements
* Tile-based map generation tool
* Powered by Source and Steam