Saw this recently. It kind of looks like Alien Breed, but with four person co-op instead of two. The production values look pretty high and who doesn't already own HL2? If co-op is your thing (*cough* ...

Alien Swarm - Free Source Engine co-op mod ShaggyMoose Jul 17, 2010 Jump to latest Follow Reply ...

GameSpot may get a commission from retail offers. If you've been looking for an online co-op game with some Alien vibes, the upcoming top-down tactical shooter DarkSwarm might just tickle your fancy.