Roullete is a casino game that involves a small ball rolling around a wheel and players betting on what number it will land on. The game can be found in virtually all casinos and is a popular pastime for many people. It is a fast-paced and easy game for beginners to learn and enjoy, yet has enough variety to attract more experienced players.

The roulette wheel consists of a solid, slightly convex, wooden disk with metal partitions called frets or separators that are arranged into 37 compartments (called pockets by roulette croupiers). Twenty-six of the pockets are painted alternately red and black, while the remaining seven are numbered consecutively from 1 to 36. There is also a green pocket labelled 0 on European-style wheels, while on American wheels there are two green pockets labeled 00.

Roulette started out as a simple game of chance and evolved into a more sophisticated game over time. Several variations were introduced as the game moved from the gambling dens of America to Europe, where it became a mainstay in Monte Carlo and other European resorts. One of the earliest changes was to make the color of the zero compartments different from the rest of the numbers. This was to prevent cheating by professional gamblers who were able to predict the results of certain groups of numbers (such as low-high, odd-even) on a regular basis at the time.

Today, the game continues to draw a steady stream of new players as it is one of the few casino games that is not overly complicated. The house edge is relatively high, but it varies depending on the specific type of wheel and bets used. Unlike other casino games, there is no skill involved in roulette, so winning depends on luck alone. Even so, many players are able to develop a system that allows them to beat the built-in house edge and win more often than not. A quick search of the Internet will return countless (possibly millions) of roulette systems, some easy to understand and others not so much.