Roullete is a casino game played on a spinning wheel. The wheel is divided into thirty-six compartments (called canoes by roulette croupiers) painted alternately red and black and numbered nonconsecutively from 1 to 36, with two green compartments labeled 0 and 00 on American wheels. A spherical ball is dropped into one of the compartments to determine the winning number. It is a popular game in casinos and gambling dens, though it has never gained the popularity of other games such as slot machines, video poker, blackjack, or craps.
There are many theories and systems for playing, and supposedly winning, roulette. A search on the internet will return millions of such systems, some easy to understand, others complex and poorly explained. A common belief is that the house edge can be reduced through a variety of betting strategies, although this has been disproved by numerous studies. Despite this, many people still believe that they can beat the maths and win at roulette. They may be correct, but only if they use a system. Using a simple system can reduce the house edge to less than one percent, which makes the game competitive with other casino games.