Roullete is a game of chance in which players place bets on the outcome of a spin of a revolving wheel. When the ball stops spinning and drops into one of the numbered compartments, a player who has bet on that number or color or a grouping thereof (such as red or black, odd or even) wins. It is estimated that the game originated in the late 17th century, with Frenchman Blaise Pascal being credited for it. The modern American version of the game evolved in the casinos of the United States.
A revolving dishlike device, the center of which has in it 37 or 38 compartments, painted alternately red and black, numbered nonconsecutively from 1 to 36, with a single green compartment marked 0 on European roulette wheels and a double zero compartment marked 00 on American roulette wheels. A game in which players place bets on the numbers, groups of numbers, or colors they expect to appear, with the probability of winning determined by the number of the number or groups chosen. It also may include bets on the direction in which the ball will fall, whether it will land in a single or double numbered pocket, and whether it will be odd or even.
Before the wheel is spun, bets are placed on the number of spots in which the ball will settle by laying down chips on a betting mat. On most European tables the betting mat is inscribed with French terms, while on American ones English language and a different style of bet mat are used. Bets are split into two categories: outside bets and inside bets. Outside bets are broader wagers covering an entire category of numbers and pay out more often but with lower odds than the inside bets.
Regardless of the type of bet you choose to make, your best bet is to stick with smaller bets that offer you better odds of hitting than larger ones. This will help you avoid losing your money too quickly, especially if you are just starting out. Lastly, it is important to understand how a roulette round works so you can place your bets at the right time. The dealer clears the table of losing bets before the new round begins, and then pays out the winners.