MMOHut, "Alien Swarm began as a mod for Unreal Tournament 2004 that was widely popular among the UT04 community. A stand alone version titled Alien Swarm: Infested was first announced in 2005, but development soon stalled. The team behind the original mod was hired by Valve and was put to work on other titles such as Left 4 Dead and Portal..."
Come for a stroll down memory lane as thrax from GameOverMan reminisces about some classic Valve gaming moments.
Player 2 takes on both Vanquish and Alien Swarm in this week's Player 2 Plays.
Incredible game still own original PS3 version, would love to see full blown sequel on PS4 or SWITCH.
Almost seven years after its initial release on Steam, Valve's Alien Swarm has been extended and expanded courtesy of a fan project.
Its a free game...what do you want?