Roulette is a popular casino game where players bet on the outcome of a spinning wheel divided into numbered pockets. The wheel features red and black numbers, along with a green zero (and double zero in American roulette). Players can place various types of bets, including single numbers, groups of numbers, or colors. Once bets are placed, the dealer spins the wheel and releases a small ball in the opposite direction. The winning number is where the ball lands, and payouts are made based on the type of bet placed. Understanding these rules enhances the excitement and strategy of the game.