http://store.steampowered.com/app/34315/ - Steam game page:
Vicious predators from the far ends of the universe are invading our planet! They’re mean and wicked, creating havoc everywhere they go! Time for the aptly named “Alien Busters” to take control, get nasty and kick some serious martian butt!
Contributed by Madotsuki (735) on Jul 10, 2011.