"Jumpin' Jack's" is a two-player electro-mechanical pinball machine released by Williams Electronic Manufacturing Company in April 1963. Designed by Steve Kordek, with artwork by George Molentin, the game features a circus or carnival theme, capturing the lively atmosphere of such events. The playfield includes two flippers, three pop bumpers, two passive bumpers, two slingshots, five rollover buttons, two gobble holes, and two drop targets.