Many players think of roulette as a single unique game. This is broadly true. But like any other casino game roulette has variants as well and most of these variants are available at online casinos. These variants have significantly different house edges and therefore an appropriate choice is critical. The house edge is the amount that is expected to go to the casino out of every $100 wagered in the long run. Therefore the player should choose the roulette variant that has the lowest house edge.
First let us see which variants should be avoided. Some online casinos offer a variant of roulette called Mini Roulette. This variant has the numbers 1 to 12 and 0. As in the normal game when 0 is called all bets lose except those bet on the number 0. In Mini Roulette 0 will be called more frequently because there are fewer numbers and therefore Mini Roulette has a very high house edge of 7.69%. This is much higher than the house edge of online slots and it is foolish to play this game.
A popular variant of roulette is American Roulette. This variant has 38 numbers - 1 to 36, 0 and 00. In this case all bets lose if either 0 or 00 are called except those bet on the numbers 0 or 00. American Roulette has the house edge of 5.26%. This too is higher than offered in most slot games. What is more important is that this is higher than the house edge in other variants of roulette. Therefore this variant too should be avoided.
The most popular variant of roulette is European Roulette. This variant has 37 numbers - 1 to 36 and 0. In this case all bets lose if 0 is called except those bet on the number 0. European Roulette scores over Mini Roulette because 0 is called less often and it scores over American Roulette because there is only one number that causes all bets to lose. European Roulette has a house edge of 2.57%, which is better than slots. There is one variant of roulette known as French Roulette that has yet a lower house edge, but is offered only on a few online casinos. Hence if French Roulette is not available then European Roulette should be the player’s choice. European Roulette is offered at almost all online casinos.
French Roulette has a structure identical to European Roulette. However it has a rule that is known as "La Partage". As per La Partage if 0 is called then half of all the even money bets are returned to the player. Hence the house edge falls to 1.35%. If you want to play roulette, then look for an online casino that offers French Roulette. Why lose the advantage.