Roulette is a popular casino game where players place bets on which numbered pocket a small ball will land in after being spun around a wheel. The wheel contains alternating red and black pockets numbered from 1 to 36, plus one or two green zero pockets depending on the version （European or American）. 
Players can make various types of bets, including betting on a single number, groups of numbers, colors （red or black）, or whether the number will be odd or even. Each bet type offers different payout odds based on its probability of winning.
The game begins when the croupier （dealer） spins the wheel in one direction and rolls the ball in the opposite direction. Bets are placed before the spin. When the ball loses momentum and drops into one of the numbered pockets, winning bets are paid out according to the game\“s payout table. |
