Roullete, also known as roulette, is a casino game in which the players place bets on the outcome of a spin of a revolving wheel with numbered holes. The player makes their bets by placing chips on a betting mat, with the precise placement of the chip indicating the bet being made. Each roulette table carries a placard that describes the minimum and maximum bets allowed.

In roulette, the house edge varies depending on the type of bet and the particular roulette wheel. The house edge is based on the number of bets placed, the number of winning and losing bets, and the payouts offered by a specific roulette wheel. The game has long been associated with glamour, mystery, and excitement. It is played worldwide in casinos and gambling dens.

Roulette is a simple game to play, but there are a few things that beginners need to know before they start playing. The most important thing to remember is that the game is a game of chance, and there are no guarantees that you will win. It is best to start out by placing bets on “outside” bets that cover groups of numbers rather than individual digits. These bets are usually cheaper and have a higher likelihood of hitting.

The game’s history is a bit unclear, but it may have originated as a variant of the games hoca and portique, or as a variation on the French games roulinette and fer à la chariot. It eventually achieved its current form in the 18th century. It is believed that the game was invented by either the 17th-century French mathematician Blaise Pascal or by a Dominican monk.

A roulette wheel consists of a solid wooden disk, slightly convex in shape, with a metal rim that divides it into thirty-six sections, alternately colored red and black, plus a single green division numbered zero. In the American version, there is an extra green segment numbered 00, making the American game a worse proposition financially than the European one. A roulette ball is spun around the circumference of the wheel and then dropped into one of the compartments. When the ball lands in a winning compartment, the player receives a payout. The game’s rules are simple, but there is a surprising level of depth for serious gamblers.