The year is 1999, and the nations of the earth have declared a world-wide peace plan. But there is a problem with the proposed truce. A council of military commanders has unleashed battalions of automated weapons into the countryside. These aerial fighters, flying saucers, tanks, and supertanks will turn the world into a lifeless landscape unless you can stop them.

Luckily, you've discovered an old military tank hidden inside the museum. Use your Joystick to steer the tank as you search for enemy automatons. Since your electronic periscope only gives you a front view from the tank, you'll have to rely heavily on your radar screen to detect the enemy. If you see a blip on the radar, you need to move fast! Use your Joystick to turn your tank until the enemy appears on the screen; press the red controller button to fire your turret gun.

(credit: Atari; direct excerpt from original game instruction manual)