One Wheel, Three Rulebooks: European, French and American Roulette, Compared
Roulette looks like one game with a single set of rules, but the wheel layout and a handful of side rules change the house edge more than almost any other variable a player controls directly. The difference between the best and worst common variant is roughly double the house edge — a gap large enough that picking the right table matters more than any betting system played on it. The sections below cover what separates European, French and American roulette, and why it matters at the table.
The Core Difference: One Zero or Two
European roulette uses a wheel with pockets numbered 1 through 36 plus a single zero. American roulette adds a second pocket, the double zero, bringing the total to 38 pockets. That single extra pocket is the whole story behind the house edge difference: on a single-zero wheel, the house edge on standard even-money bets works out to about 2.7%; on a double-zero wheel, it roughly doubles to about 5.26%. Nothing else about how the game is played changes — the payout odds on a straight-up number stay 35 to 1 either way — but the extra losing pocket on the American wheel means the house wins more often across the same number of spins.
French Roulette: Same Wheel, Better Rules
French roulette uses the same single-zero wheel as the European variant but adds two rules that specifically favour even-money bets — red/black, odd/even, high/low. Under la partage, if the ball lands on zero, players with an active even-money bet get half their stake back instead of losing the whole bet. Under the stricter en prison rule (offered at some tables instead of la partage), that stake is not returned but "imprisoned" for one more spin; win that spin and the stake is released back to the player. Either rule cuts the house edge on even-money bets roughly in half again, down to about 1.35% — the lowest of the three common variants, but only on those specific bet types, not on straight-up number bets.
| Variant | Zeros | House edge (even-money bets) |
|---|---|---|
| American | 0 and 00 | ≈5.26% |
| European | 0 only | ≈2.70% |
| French (la partage / en prison) | 0 only | ≈1.35% |
Live Roulette Versus RNG Roulette
Beyond the wheel layout, the game can run two different ways: RNG roulette generates every spin with a random number generator and no physical wheel, while live roulette streams an actual wheel and dealer from a studio, with the outcome determined by the physical spin rather than software. Spin Samurai's live casino tables run on ICONIC21, Plati+ and Imagine Live, and include both European and French roulette among the live formats — the same variant distinction above applies, and it is worth checking which specific rule set (single zero plus la partage, or single zero without it) a given live table uses before assuming French rules apply by default.
Why This Matters More at the Table Than a Betting System
Progressive betting systems — doubling after a loss, adjusting stake size based on a streak — do not change the underlying house edge on any variant; the wheel's built-in edge applies to every spin regardless of bet size or sequence. Choosing French roulette over American roulette for even-money bets, by contrast, is a real and immediate reduction in the house edge, achieved simply by picking a different table rather than a different strategy. If a site offers both variants, the choice of wheel is the single highest-impact decision a roulette player can make before placing a single chip.
A Quick Way to Tell Variants Apart at a Glance
- Count the zeros on the wheel: one zero is European or French, two zeros (0 and 00) is American.
- Check the table rules or help screen for "la partage" or "en prison" to confirm French rules apply.
- Note that straight-up number payouts (35:1) stay the same across all three variants — only the house edge on even-money bets shifts.
- For live tables specifically, confirm the variant label in the lobby rather than assuming from the studio name alone.
Roulette's odds are fixed the moment the wheel is chosen, not the moment the ball is spun — picking European or French over American, where both are on offer, is the one adjustment that reliably works in a player's favour. 19+. Gambling can be addictive — play responsibly.