Roullette is a casino game in which a small ball is spun around a rotating wheel and players bet on what number or group of numbers, color red or black, odd or even numbers, range of values the ball will fall between (high or low), etc. The game first emerged in Europe around 1800 before spreading rapidly throughout North America casinos. It originated with Hoca & Portique but is often described as an evolution thereof with several variations over the centuries and many stories surrounding its development circulating as to where and when its roots lie within. It has since gained prominence across North American casinos as it spread around revolving wheels revolving wheels as quickly.

The roulette wheel consists of a wooden disk slightly convex in shape surrounded by metal separators (known as frets). On European-style wheels, its 36 compartments are alternately painted red and black; one contains zero and two contain double zero (two green compartments on American wheels contain signs 0 and 00). Croupiers who spin and take bets mark their betting tables to show which compartments will become winners; then bettors place chips onto an area on a betting mat which features exact locations for different bet types – six numbers or less are known as Inside Bets while bets of 12 numbers or more are known as Outside Bets.

Inside bets include Straight-up bets, which require placing chips on an individual number to win; Split bets on two numbers pay out at odds of 2:1, and Corner bets comprise four numbers that form a square on the betting table and offer odds of 3:2. Outside bets include Column, Dozens and Line bets.

Some bettors employ the Fibonacci mathematical sequence, which recommends beginning with low bets and increasing them after every win. This strategy may work well for those hoping to limit losses and maximize wins; however, it should be remembered that there is no foolproof system that will guarantee success every time; sticking with a budget and playing for fun are much safer options than following such strategies. Furthermore, selecting a reliable online casino where fair games will take place is important; scams and untrustworthy websites abound online so doing your research beforehand will allow you to enjoy winnings without worrying about being taken advantage of.