European roulette

Introduction
Roulette is one of the easiest games to play and understand in the casino. As usual the easier a game is to understand the greater the house edge, and roulette is no exception. If you are looking for a easy to understand and slow paced table game, and are willing to sacrifice on the house edge, then you may like roulette. If you want something more stimulating or with a decent return I would suggest looking at other games.
One difference between roulette and all other table games is that roulette chips have no value denomination printed on them. This actually is the true definition of a chip, one which indicates its value is technically called a check. The roulette table comes with six to eight sets of different colored chips, each set consisting of 300 chips. When a player purchases chips he gets his own color and the value of each chip is the buy-in divided by the number of chips received. The dealer will place a token on top of the dealer’s stack of that color of chips to indicate the value.
American Rules
A U.S. roulette wheel consists of 38 numbered slots: numbers 1 to 36, a zero, and a double zero. The betting layout consists of every individual number as well as a host of “outside” bets on combinations of numbers. After the players make their bets, the dealer spins the wheel and a ball and after several seconds the ball will land in one of the numbered slots.
The following table displays the available bets, the win (on a “to one” basis), and the probability of winning under U.S. rules. All casinos in the U.S. follow these rules except for in Atlantic City. The house edge on all bets is 1/19, or 5.26%, except for the 0-00-1-2-3 combination, which carries a house edge of 7.89%.
Double-Zero Roulette
BET PAYS PROBABILITY WIN HOUSE EDGE
Red 1 47.37% 5.26%
Black 1 47.37% 5.26%
Odd 1 47.37% 5.26%
Even 1 47.37% 5.26%
1 to 18 1 47.37% 5.26%
19 to 36 1 47.37% 5.26%
1 to 12 2 31.58% 5.26%
13 to 24 2 31.58% 5.26%
25 to 36 2 31.58% 5.26%
Six line (6 numbers) 5 15.79% 5.26%
First five (5 numbers) 6 13.16% 7.89%
Corner (4 numbers) 8 10.53% 5.26%
Street (3 numbers) 11 7.89% 5.26%
Split (2 numbers) 17 5.26% 5.26%
Any one number 35 2.63% 5.26%
European Rules
What most call “European roulette” is roulette played on a 37-number wheel, with one zero only. The pays are the same as in American roulette. However, with one zero the house edge is cut to 1/37, or 2.70%, on all bets.
The term European roulette is somewhat of a misnomer because you can find single-zero roulette all over the world. In fact, it is the standard outside the United States. Even in the United States you can find single-zero roulette in some high-limit rooms.
Atlantic City Rules
In Atlantic City, any all even money bets (red, black,odd, even, 1-18, 19-36) follow a variation of the European half-back rule (see below). If the ball lands in 0 or 00, then the player will lose only half of any even money bet. This lowers the house edge to 2.63% on these bets. This rule does not apply on single zero wheels.
French Rules
French roulette is played on a single wheel and also features a favorable “en prison” or half-back rule. Under the “half-back” rule, if the player makes any even money bet (red, black, odd, even, 1-18, 19-36), and the ball lands in zero, then the player gets half the bet back, known as “la partage” in French.
The term French roulette is also somewhat of a misnomer because the “la partage” rule can sometimes be found in casinos outside of France, including some high-limit rooms in Las Vegas.
Rather than lose half, the player sometimes may also choose to imprison the bet. If an imprisoned bet wins on the next spin it is released and the player gets it back, without winnings. What is subject to casino rules is what happens to an imprisoned bet if the ball lands in zero again on the next spin. At some casinos the bet loses, and at others it would become double imprisoned. If a double-imprisoned bet bet won on the next spin, it would move up a level, and become single-imprisoned again. If it lost, then if would become triple-imprisoned if the casino allowed it, otherwise it would lose.