Roulette is a popular casino game that involves a spinning wheel and a small ball. The wheel has numbered slots, ranging from 0 to 36 in European roulette, and 00 is added in American roulette. Players place bets on where they think the ball will land, choosing from options like specific numbers, colors, or groups of numbers. Once bets are placed, the dealer spins the wheel in one direction and rolls the ball in the opposite direction. When the ball comes to a stop, it lands in one of the numbered slots, determining the winning bets. The game combines chance and strategy, making it exciting for players.