Roullete is a casino game where players can place bets on a single number or various groupings of numbers. They can also bet on the color red or black, whether the number is odd or even and if it is high (19-36) or low (1-18). The odds of winning vary greatly depending on which type of bet you make. Once the ball lands in one of the pockets, all losing bets are collected as casino income and winning bets are paid out according to their payout percentage.
There are many different versions of roulette, but European Roulette is by far the most popular both in physical casinos and online. The primary reason for this is that it has a lower house edge, which basically means that your chances of winning are magnified. This is achieved by not having a double zero pocket and by employing the en prison and la partage rules.
The roulette wheel consists of a solid wooden disk slightly convex in shape and rimmed by metal compartments called separators or frets. Thirty-six of these are painted alternately in red and black, while a 37th compartment, painted green, carries the sign of 0 on European-style wheels and 00 on American ones. The wheel is spun by a dealer and the ball is dropped into the corresponding compartment to determine if it is a winning bet.