The Differences Between American And European Roulette

The classic game of roulette is the ultimate visual representation of casino gambling worldwide. Although the core concept —picking the winning number— is the same across the globe, not every roulette game are created equal. The casino world features two main versions that dominate the casino floors: American Roulette and European Roulette. Knowing the massive variations between the two styles is incredibly important for anyone trying to protect their bankroll.

The Green Zeroes: How One Pocket Changes Everything

The primary physical distinction between American and European roulette is the number of green pockets. A traditional European Roulette wheel features 37 total pockets: the numbers 1 through 36, plus a single green zero (0). Conversely, the US variation has thirty-eight slots. It includes the regular 1-36, the single green zero (0), and an extra green slot: the double zero. This tiny physical difference may look trivial to an amateur player, but mathematically, it alters the odds massively.

The Devastating Impact on the House Edge

In this game, the winning odds paid are strictly designed on a 36-number wheel. For instance, guessing the exact number pays out at 35:1, regardless of which version you play. Since the Euro version only has one green slot, the casino's built-in mathematical advantage is a very reasonable 2.70%. Tragically, since the US version adds a second guaranteed losing pocket for outside bets (the 00) while keeping the exact same 35 to 1 payout, the casino's advantage skyrockets to exactly 5.26%.


Always look for the single zero if both are available. There is zero benefit to play with a double zero.
The Top Line bet is unique to the US wheel and is the absolute worst bet, giving the house a 7.89% advantage.
Some European tables feature the La Partage rule, which reduces the casino margin on red/black wagers down to an incredible 1.35%.

The Ultimate Breakdown: Both Wheels Compared

For a fast visual reference, take a look at this simple chart. It shows exactly why smart gamblers always prefer the European layout.


FeatureSingle Zero WheelDouble Zero Wheel
Total Pockets37 (1-36 plus 0)38 (1-36 plus 0 and 00)
Number of Green Zeroes1Double Zero
Casino Advantage2.7%5.26% (Very Bad)
Lowest Possible Edge (with La Partage)Incredible 1.35%5.26% (Rule does not apply)


To wrap it up, the extra 00 pocket is nothing more than a casino trick to drain your bankroll faster from uninformed players. No matter if you are wagering at a lavish casino in Las Vegas or playing digitally at an online casino from your smartphone, your first goal should be locating a single zero game. Skipping the 00 wheel is the easiest and most effective way to instantly double your winning probabilities.