COH

COH © 198? Lill, Ken.

You can move a robot 'sprite' around the screen, and it flashes when you run into some background elements, but that's all. Another version adds two robots that were just background elements, that can now be controlled by player 2. Pushing left and right on the joystick moves the left character left and right, while pushing up and down on the joystick moves the right character left and right.