Roulette is an extremely simple game. A wheel with numbered pockets mounted inside the sunken dish, is spun. Then the croupier [Dealer] places a small white ball into a groove around the rim of the dish and spins it in the opposite direction to the spin of the wheel. Gravity eventually causes the ball to fall onto the spinning wheel, where it bounces around until it comes to rest in one of the numbered pockets. Winning, and losing, depends on where the ball lands and which bets players had laid prior to the spin. Each spin of the wheel is a new game.
All bets are paid before the next spin, and all new bets must be made before the next spin. However, players can often continue to make bets right up to just before the white ball drops down and starts bouncing around the spinning wheel, which the croupier will indicate by calling out "no more bets". Roulette is also the only casino game, apart from reel slots, where players are mere spectators and can make no decisions to affect the outcome of the game.
