Roulette is the undisputed symbol of the casino floor, an elegant game of chance that has captivated players for centuries.
However, many beginners do not realize that there are actually two major variations of the game being played globally.
The difference between the two games comes down to a single, tiny pocket on the wheel, but the mathematical impact is massive.
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
The entire difference between European and American Roulette boils down to the green pockets on the wheel.
Because there is only one zero, the total number of possible outcomes on a European wheel is 37.
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 Math: Comparing the House Edge
The house edge is the built-in percentage of your bet that the casino expects to keep over the long term.
If you hit a single number on either wheel, the dealer will hand you 35 chips for every 1 chip you bet.
A 2.70% edge means you will lose an average of $2.70 for every $100 you wager; this is considered a fair casino game.
Despite the worse odds, the American game still only pays 35 to 1, significantly short-changing the player.
A 5.26% edge will drain your bankroll twice as fast as the European version, offering you zero additional benefits.
French Roulette: The Best Rules Available
While European Roulette is excellent, a specific variant called French Roulette offers even better terms for the player.
The French variations are designed to protect players when the dreaded green zero actually hits.
Instead of losing your entire wager to the zero, the casino returns 50% of your stake as a consolation.
Both rules provide massive mathematical value to the player, making French Roulette the most profitable version to play.
If French is unavailable, default to European; but never, ever click on the American Roulette table.
Comparison of Roulette Variants
American Roulette: 38 pockets (0 and 00). House edge is 5.26%. The worst option available. Single Zero Roulette: Excellent odds for a table game. This should be your default choice. The French Table: Single zero with special rules that refund half your bet on a zero. The ultimate player advantage. Novelty Games: Multi-wheel or lightning roulette alter the payouts; always check the RTP before playing variants. The Math: The only true strategy is picking the wheel with the lowest built-in casino advantage.
The House Edge Explained Mathematically
Game AspectEuropean LayoutAmerican Layout Green ZeroesOne (0)Two (0, 00) Payout for Single Number35 to 135 to 1 (Identical) Actual Probability1 in 371 in 38 Expected Loss per $100$2.70$5.26
There is absolutely no logical reason a player should ever choose to play American Roulette.
However, online casinos offer both versions to all players, giving you the power to choose the better odds.
By simply selecting the correct thumbnail in the casino lobby, you instantly double your chances of keeping your bankroll.
Respect the math, demand the single zero, and enjoy the elegant thrill of classic European Roulette.