Rules light Starship Troopers flavored military game. You're with the 3:16 Expeditionary Force. You go from planet to planet making contact with new and interesting forms of life--and exterminating them. Alens have special abilities they can activate based on race and planet type. They are represented by Threat tokens, planetary hotspots that you don't really know what's there until you clear them out. Your skill levels (there's two: Combat and Non-Combat) go up as your rank increases. Your gear gets better as your rank increases. Your rank increases by killing space monsters.