The top-down PC shooter Alien Breed: Impact from the creators of the Worms series is one of the most downloaded games on Steam right now and Team 17 would like to give some more insight on why to all the gamers out there who might not know much about this game still. The following video is a co-operative campaign game-play video showing off some of the upgradeable weapons the game has to offer being put to use. The aliens are here and breeding, check out the following video to see what you can do about it today on Steam.