"Riverboat Gambler," released by Williams in 1990, is a gambling-themed pinball machine designed by Ward Pemberton. Featuring a unique blend of pinball and casino games, the machine incorporates elements like a roulette wheel and various card games into its gameplay. It has two flippers, three pop bumpers, and multiple drop targets. Players can place bets on a virtual roulette wheel integrated into the backglass, enhancing the game's casino ambiance.