The commander calls you at 4:00 AM and at 5:30 you are at Area 51, the secret air force installation. He explains tersely: "There are two million mutants or some such freaks advancing in our direction. You're the only one who can stop them!" It's time to grab your firearm and strap your boots, soldier! Make Uncle Sam proud!

Features:
- Blast the invading mutants and gain points
- Shoot the gas bottles to create a trap for the invaders
- Call in the air strike and decimate the foes
- Look out for friendly ufos, beaming in health powerups
- Hop into the tank and use the armored advantage
- And ultimately, try to survive as long as you can!