Seiko-Chan SOS (1983)

Seiko-chan was caught in the robot kingdom and it’s up to you to rescue her from being brainwashed. Robots appear one at a time in a large rectangular arena. They are stationary when they appear, but can randomly and suddenly teleport to other parts of the screen. You control a cross-hair, that you can use to target and shoot the robot, which is only vulnerable in the chest area.