Roulette is a casino game with several betting options. It is often played on a wheel with a known bias, which can be exploited by predictive strategies.

Announced bets are special betting combinations most commonly featured in French Roulette though also present in online European Roulette variants. These bets are based on specific rules and have their own French names. They can offer higher payouts than other bets.


Some people believe that roulette was invented by 17th-century French mathematician Blaise Pascal as part of his attempts to create a machine that could demonstrate perpetual motion. Others claim that it was based on Chinese gambling games, which were brought to France by Dominican monks. However, there is no evidence that any of these claims are true.

The roulette game that is known today emerged in 17th century France, where it was first mentioned in a document on gambling regulations. Its origin is uncertain, but it is likely to have combined elements of English games such as Roly Poly and Even-Odd with Italian games such as Biribi. In addition, it may have been inspired by the shield-shaped gambling devices that Roman soldiers used to play.


There are a few different types of bets in roulette, and the odds of winning depend on which ones you choose. Inside bets, which place your chips on a single number or small group of numbers, have higher payouts than outside bets, which are placed on an entire category of numbers. The Line Bet/Six Number Bet/Sixline Bet (also known as a sixain in French) is a type of outside bet, which places your chips to straddle the line between two rows of numbers. If either number wins, the payout is 17-1. The Street Bet/Three Number Bet/Side Bet (also called a transversal in French) is another outside bet, which pays out 11-1 if you win.