Riverboat Gambler

Riverboat Gambler was never actually manufactured - it exists only as backglass artwork by Dave Christensen, apparently intended for a solid-state Bally machine with a playing cards and gambling theme, though the Bally name does not appear on the art itself and it's unknown whether the game was ever formally considered. Based on the four-score-display and credit/match window layout typical of Bally backglasses, the art is estimated to date from sometime between 1976 and 1986.

Since no machine was ever built, no gameplay, rules, or feature details exist to describe - only the surviving artwork, evoking a riverboat casino atmosphere consistent with its gambling and playing-card theme.

As an unproduced concept, Riverboat Gambler is primarily of interest to collectors and historians of pinball backglass art and unused Bally concepts, rather than as a machine that can be played or owned as a working game.