Black Cat Games has updated the Alien Swarm: Infested website with several high-res portraits and a selection of speech samples showcasing the 9 marines featured in the game. In Alien Swarm: Infested, as a Commander in the Interstellar Armed Forces, your job is to guide your squad and successfully complete their mission against the ravages of the Swarm infestation, a threat which plagues mankind across the breadth of colonized space. Built upon the Source Engine from Valve, Alien Swarm: Infested features a unique blend of co-op play and squad level tactics all in an overhead view.