Sabotage topic

Sabotage is a 1981 computer game for the Apple II family of computers, written by Mark Allen and published by On-Line Systems. The player controls a gun turret at the bottom of the screen by either keyboard, paddle control, or a single axis of a joystick. The turret can swivel to cover a large area of the screen, but cannot move from its base. Helicopter fly across the screen at varying heights, progressively lower over time, dropping paratrooper. The gun may fire multiple shots at once, and... full article at wikipedia