Add-a-Ball Preview Image
Machine Description
Add-a-Ball, an extremely rare electro-mechanical pinball machine from September 1961, with reportedly fewer than 24 units produced before Williams renamed the design to Skill-Ball due to a conflict with Gottlieb over a game with the same name. The "add-a-ball" feature was an important innovation that distinguished pinball machines from gambling devices by extending gameplay without awarding additional credits. Designed by Steve Kordek with artwork by George Molentin.