Do you live in a world that is overrun with robots? Want to eliminate those said robots with awesome weapons? Like a gun that uses garden gnomes as ammunition? For a limited time only you can buy Shoot Many Robots from the Xbox LIVE Arcade for 50% off it’s normal price. The only condition? You’ll have to be a Xbox LIVE Gold Member.

From Xbox.com Shoot Many Robots is a 4-player co-op run-n’-gun action game starring robot slayer and gun aficionado, P. Walter Tugnut. From a gun that shoots garden gnome missiles to a tutu that boosts speed and damage, there are hundreds of crazy guns and gear to unlock that boost Walter’s stats – not to mention, make him look pretty. You and three friends can team up to exterminate a zillion robots while progressing through tons of missions, facing uncomfortably epic bosses, and leveling up along the way.

You can pick up the game for 400 Microsoft Points right now, in the Xbox LIVE Arcade Marketplace.