Earth is under attack! From secret bases hidden in the farthest reaches of the galaxy, deadly missiles have been sent to destroy your home planet. Earth needs a Champion, someone with courage. . .the skill to operate a Global Defense Satellite. . .someone who is brave enough to fight a space battle with almost impossible odds. Earth needs you to take on the enemy in one of the meanest, toughest space battles ever!
You've got the Global Defense Satellite and a supercharged laser cannon. Through ten waves of nonstop action, seek out and destroy the enemy missiles and satellites. . .zapping anything that gets in your way.
Each wave is tougher. The risks, greater. Nobody said it would be easy. Are you ready for Global Defense?