Operate your floating tank by the 8-way joystick and shooting button.

Avoid the obstacles such as woods and blocks.
Fight 32 kinds of enemy until finally you have destroyed THE LAST ENEMY BASE.

Destroy the big EYEBALLS, or they will be ambushing you on the next frontline.
Destroy small EYEBALLS, and they will turn into tear-shaped objects. You will get points by passing above these objects.
And then all the enemy on the screen will disappear.

Take up 12 pieces of "POWER ENERGY", and "MEGA SIGN" will appear. If you take up MEGA SIGN, your tank will get united with one of the spare players upper left of the screen and become
enormous.
Such a powered-up tank will have striking power three times stronger than before.

THE LAST ENEMY BASE can be destroyed by shooting the red NUCLEUS at the very top of the screen.