Challenge the evil Zaxxon in the harsh battleground of space! Alone in your space fighter, you are approaching the asteroid bases of the mighty robotic conquerer, Zaxxon! Maneuvering around gun turrets, missiles, forcefields and various airborn robotic ships, you will soon reach Zaxxon himself. But wait! Your encounter with Zaxxon is just the beginning of your mission, which will take you through additional enemy asteroids, such as the Space Port and the Alien City, towards your true final target: The Zaxxon High Command!