G.I. Joe SIGMA 6 is the code name for a group of highly trained covert special mission operatives. Duke, Snake Eyes, Heavy Duty, Scarlett, Long Range and Tunnel Rat - who use high-tech, state-of-the-art gear along with their other hero skills to go up against the forces of evil. G.I. Joe must defend the world against the evil Cobra in their most daring mission yet! With some of your favorite G.I. Joe and Cobra characters, and some great new ones, get ready for non-stop action and adventure!