Roulette is a casino game of chance that is played by spinning a small ball around the edge of a rotating wheel. Players place bets on which red or black numbered compartment the ball will enter when it comes to rest. The game emerged in the 18th century in Europe and is now found worldwide in casinos, gambling houses, and private homes. There are fanciful stories about its origins, including that it was invented by 17th-century French mathematician Blaise Pascal, and that it was brought to France from China by Dominican monks.

The wheel consists of a solid wooden disk slightly convex in shape, with thirty-six equal-sized compartments alternating between black and red and numbered from 1 to 36. A 37th compartment, painted green, carries the number 0. On European wheels, the numbers are alternately numbered red and black, while on American wheels they are all arranged in a single column. The number of chips a player wins depends on how they bet; inside bets (bets placed on a single or small group of numbers) have higher odds of winning but lower payouts, while outside bets (bets made on large groups of numbers) have low odds of winning but high payouts.

A dealer spins the wheel in one direction and a ball in the opposite direction around a tilted circular track that runs around the outer edge of the wheel. The wheel and the betting table are both set up so that no devices can be hidden in either the table or the wheel, to prevent cheating. Once the dealer announces “No More Bets,” no more chips can be placed.

Aside from avoiding bets that have the worst odds of winning, there is no real strategy for playing roulette. The house edge is built into the game, and unless you’re lucky enough to win the lottery, there is no way around it. However, you can make your experience at a casino roulette table more enjoyable by following these simple tips.

How to Win at Roulette