The classic casino game! The roulette wheel has 37 separately numbered slots alternately coloured red and black; the "0" is green. The dealer releases a ball into the spinning wheel and when the wheel stops, the ball comes to rest in one of these slots. The objective is to predict which of the 37 numbers on the wheel the ball will stop on. By predicting the right number or area of the wheel where the ball finishes you earn a payoff on your bet. The size of the payoff depends on the nature of the bet placed.