In this 3D shoot 'em up, you play Kurt, and your job is to save the world. Aliens have sent 8 giant fortresses to destroy earth. You run and jump through 6 missions of strange 3D worlds and kill the "Stream Riders" with your machine gun arm. Precise platform jumps are part of the challenge.Kurt is equipped with a special battle suit with an included parachute and a sniper interface (allowing you to aim precise shooting while standing still) embedded in your helmet. Further weaponry enhancements are available as you progress through the game.