"Blast aliens in four player co-op"
| Publisher: | Valve |
| Developer: | Valve |
| Released: | 19 Jul 2010 |
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Originally a mod for Unreal Tournament 2004, Alien Swarm has been revitalised and refreshed for a (free) 2010 release on Steam. Four player, alien blasting, co-op action in a top-down-ish isometric viewpoint.



