Roulette is one of the world’s most popular casino games. It is a simple game of chance based on the principle that a rotating ball will land in one of numbered pockets on a wheel. It is played in both online and offline casinos around the world. While it is a simple game of chance, it offers a surprising level of depth for serious bettors and can reap high rewards.

The game’s popularity is largely due to its glamour, mystery and excitement. It has also been associated with a number of historical events, including the 17th-century French mathematician Blaise Pascal’s invention of the first mechanical roulette wheel.

Players place bets on what number will come up by laying down chips on a specially designed table. The precise location of each chip indicates the type of bet being made. Bets on six numbers or less are called “inside bets”. Bets on 12 or more numbers are known as “outside bets”. Once the chips are down, the dealer spins the wheel and rolls a small white ball around it.

During the spinning, the ball bounces on the rim of the wheel in random directions until it comes to rest in one of the numbered slots. The wheels of European-style roulette have 37 compartments numbered 1 to 36 in alternate red and black. There is an extra green division numbered 0 on American wheels.

Each table has a specific layout of bet types with varying minimum and maximum amounts. Before you play, it’s a good idea to set a budget and choose a table within that range. Each table carries a placard indicating its minimum and maximum betting limits. In addition, each bet type has its own payouts. Inside bets pay out higher amounts than outside bets.

A dealer – or croupier – spins the wheel in one direction while rolling a ball in the opposite direction. Once the ball and wheel come to a stop, he or she will mark winning bets by placing a marker on them. Winning bets are paid out and the losing bets cleared off the table. The dealer will then reset the table for the next round.

When you win a bet, cash out your winning chips as quickly as possible. This will prevent you from spending more than you can afford to lose. Also, it is a good idea to not dip into your winnings for future bets. You may be tempted to bet with your winnings, but this won’t improve your odds more than a coin toss would. You should also avoid watching other players, as this is both a waste of time and can be a distraction for the croupier.