Roullete is a casino game where you bet on the outcome of a spin of a roulette wheel. The game was derived in France from older games hoca and portique, first appearing under its current name in 1716 in Bordeaux. It achieved its present layout and wheel structure about 1790. The roulette wheel is a solid wooden disk slightly convex in shape with 36 compartments, or pockets, that are alternately painted red and black. A 38th pocket, painted green on European wheels and red on American ones, carries the sign 0.
Players can place a variety of “inside” bets on a specific number, various groupings of numbers, whether they are odd or even, or if the numbers are high (1-18) or low (19-36). There are also “outside” bets which are wagers on positions on the board that encompass groups of numbers, such as the Dozens Bet (also known as douzaine in French), where you bet on whether the winning number will be in the first dozen, the second, or the third. These bets offer a higher payout than the inside bets, but they carry a lower probability of winning. Ultimately, any bet in roulette that does not involve betting against the house will lose.