and how to play Roulette:
Roulette was first played in France back in the 17th century. It is now one of the most popular European gambling games and Monte Carlo in Monaco is a well known and famous casino center for playing roulette.
Players, usually up to eight, play against the house represented by the croupier also called the dealer, who spins the roulette wheel and handles the wagers and payouts. In the European roulette and French roulette version, the wheel has 37 slots representing 36 numbers and one zero. In the USA most roulette wheels have two zeros and therefore 38 slots.
Each player buys-in a different colored chips so their bets don't get mixed up. At the end of play, if you won, you exchange back the colored chips with cash chips. These are special chips with the value amount imprinted on them. There are several denominations in various colors. You then take these chips to the cash desk where they will give you actual cash money in exchange.
To play roulette, you place your bet or bets on numbers (any number including the zero) in the table layout or on the outside, and when everybody at the table had a chance to place their bets, the croupier starts the spin and launches the ball. Just a few moments before the ball is about to drop over the slots, the croupier says 'no more bets'. From that moment no one is allowed to place - or change - their bets until the ball drops on a slot. Only after the croupier places the dolly on the winning number on the roulette table and clears all the losing bets you can then start placing your new bets while the croupier pays the winners. The winners are those bets that are on or around the number that comes up. Also the bets on the outside of the layout win if the winning number is represented.
The house advantage
On a single zero roulette table the house advantage is 2.7%. On a double zero roulette table it is 5.26% (7.9% on the five-number bet, 0-00-1-2-3). The house advantage is gained by paying the winners a chip or two (or a proportion of it) less than what it should have been if there was no advantage. (See Roulette Quiz - The Casino Advantage.)
The 'En Prison' rule
A roulette rule applied to even-money bets only, and by some casinos (not all). When the outcome is zero, some casinos will allow the player to either take back half his/her bet or leave the bet (en prison = in prison) for another roulette spin. In the second case, if the following spin the outcome is again zero, then the whole bet is lost.
The 'La Partage' rule
The la partage roulette rule is similar to the en prison rule, only in this case the player loses half the bet and does not have the option of leaving the bet en prison for another spin. This refers to the 'outside' even-money bets Red/Black, High/Low, Odd/Even and applies when the outcome is zero. Both the La Partage and the En Prison roulette rules essentially cut the casino edge on the 'even-money bets' in half. So a bet on Red on a single-zero roulette table with the la partage rule or the en prison rule has a 1.35% house edge and one on a double-zero roulette table has a house edge of 2.63%.
A bet on one number only, called a straight-up bet, pays 35 to 1. (You collect 36. With no house advantage you should collect 37 (38 in the USA on double zero roulette wheels).
A two-number bet, called split bet, pays 17 to 1.
A three-number bet, called street bet, pays 11 to 1.
A four-number bet, called corner bet, pays 8 to 1.
A six-number bet, pays 5 to 1.
A bet on the outside dozen or column, pays 2 to 1.
A bet on the outside even money bets, pays 1 to 1.