The single most important decision in roulette is choosing between European and American variants. European roulette has one zero pocket, giving the house a 2.7% edge. American roulette adds a double-zero pocket, raising the house edge to 5.26%, nearly double. This difference compounds over time. If a casino offers both variants, always choose European roulette. If only American is available, the house edge is approaching that of a poorly-paying slot machine.
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| Variant | Zeros | House Edge | Best Bet | Verdict |
|---|---|---|---|---|
| European Roulette | Single zero (0) | 2.70% | Any even-money bet | Best choice |
| French Roulette | Single zero (0) | 1.35% (La Partage rule) | Even-money bets with La Partage | Best odds available |
| American Roulette | Double zero (0, 00) | 5.26% | Any (still 5.26%) | Avoid if European available |
| Lightning Roulette | Single zero | ~3.5% effectively | Straight bets for multipliers | Entertainment value, higher edge |
French Roulette uses a single zero like European, but adds the La Partage rule: if the ball lands on zero, you receive half your even-money bet back. This halves the house edge on even-money bets from 2.7% to 1.35%, making French Roulette the best odds in any standard roulette game. Not every online casino offers French Roulette; look for it specifically rather than settling for American.
No betting system (Martingale, Fibonacci, D'Alembert) changes the house edge. Every spin is independent; past results do not affect future outcomes. Betting systems change the variance of your results (winning smaller amounts more often at higher risk) but do not alter the expected long-run return. The only way to improve your mathematical position is to choose French or European roulette over American.