The "Joker" pinball machine, released by Bally Manufacturing Co. in 1968, is a four-player, electro-mechanical game featuring a fun park theme. Designed by Ted Zale with artwork by Jerry Kelley, it incorporates notable features such as zipper flippers—flippers that can close together to prevent the ball from draining—three pop bumpers, five mushroom bumpers, two slingshots, and a kick-out hole.
