I,m pretty sure that most of your older mame games like pacman,galaga,galaxian,wonderboy,ghosties,etc,etc,etc, will only allow that player ones joystick be used even if playing a two player game so that you both have to alternate when playing.The only excepting being that if you are playing those games on a cocktail cabinet the games allow using both the joysticks as you are facing each other. Hope that helps you out.