Android 2 (1983)

A shoot 'em up maze game. The aim of the game is to destroy five Millitoids - large worm-like creatures - which roam a white-walled maze. The maze is also filled with other enemies, landmines, trees and other features. The Millitoids are destroyed with three shots to the head. When all five are destroyed, the player moves onto the next of three mazes. (wikipedia)