Roulette is the undisputed symbol of the casino floor, an elegant game of chance that has captivated players for centuries.
While the basic rules are identical, there is a fundamental difference between the European and American versions of the game.
One version offers a fair game of chance, while the other is heavily stacked in favor of the casino.
Let's explore the math behind the wheels so you can ensure you are always getting the best possible odds.
Understanding the Physical Difference on the Wheel
Visually, the two tables look almost identical, but a closer inspection of the wheel reveals a critical design change.
The classic European version is the original game, utilizing a wheel with 36 red and black numbers and exactly one green zero.
An American Roulette wheel features 38 pockets: the numbers 1 through 36, a single zero (0), and an extra double zero (00).
Adding one extra slot to the wheel drastically alters the probabilities without changing the payouts.
Therefore, simply by choosing the wheel with two zeroes, you are doubling your chances of losing an even-money bet.
The Statistical Advantage: 2.7% vs. 5.26%
The house edge is the built-in percentage of your bet that the casino expects to keep over the long term.
The payout ratio is identical, regardless of which continent the game is named after.
However, on a European wheel, the true odds of hitting that number are 36 to 1 (because there are 37 total pockets).
On an American wheel, the true odds of hitting your number jump to 37 to 1 (because of the 38 total pockets).
A 5.26% edge will drain your bankroll twice as fast as the European version, offering you zero additional benefits.
La Partage and En Prison Rules
If you want the absolute best odds possible, you should look specifically for French Roulette tables.
These special rules—La Partage and En Prison—apply to even-money bets like Red/Black or Odd/Even.
Instead of losing your entire wager to the zero, the casino returns 50% of your stake as a consolation.
If your bet wins on the subsequent spin, you get your original stake back (without profit); if it loses, the casino takes it.
When playing at an online casino, you should always specifically search the lobby for French Roulette first.
The Three Main Roulette Games
American Roulette: 38 pockets (0 and 00). House edge is 5.26%. The worst option available. European Roulette: 37 pockets (single 0). House edge is 2.70%. The standard, fair version of the game. French Roulette: 37 pockets with La Partage rule. House edge is 1.35% on even-money bets. The absolute best choice. Mini Roulette: Often found online, features only 13 numbers. Avoid it, as the house edge is usually worse. Strategy: No betting system can overcome the 2.70% or 5.26% house edge over the long term.
The House Edge Explained Mathematically
Game AspectEuropean LayoutAmerican Layout Total NumbersThirty-SevenThirty-Eight Payout for Single Number35 to 135 to 1 (Identical) Chance of SuccessBetterWorse House Edge2.70%5.26% (Nearly Double)
Playing the American version is essentially volunteering to give the casino double the money for the exact same entertainment.
Vegas casinos know the American wheel is a trap, which is why they force low-stakes players to use the double-zero tables.
If you see a green 00 pocket, immediately close the game and find a European or French table instead.
Respect the math, demand the single zero, and enjoy the elegant thrill of classic European Roulette.