Rolaire is a played with colored balls, 5 red, 4 yellow, and 3 blue. You 'back' your fancy as to which colored combination will end up at the bottom of the customized ramp. There are ten winning combinations with the odds of favorite at 5/2 to the outsider at 72/1 !The Rolaire box itself is made of plastic with a wooden surround. It tilts in the middle to create a gentle slope that the balls roll down. The surface of the board is made up of several channels and sloping hazards scientifically designed to impede and divert the balls on their way down to the winning slot at the bottom of the board.A roulette type of mat is in play to place your hunches and there are several modes of play. A very rare game indeed! - BoardGameGeek