Dirty Posted February 24, 2011 Share Posted February 24, 2011 Proto Defense DLC is now available on Steam! Team up with your friends in this free co-op turret defense game for ProtoGalaxy. Take on new bosses, 8 new achievements and compete to top the leaderboards! In celebration of the new Proto Defense DLC, ProtoGalaxy is 50% off until March 2nd, 10am Pacific Time! More... Quote Link to comment Share on other sites More sharing options...
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