Roulette is universally recognized as one of the most iconic and popular games in casino history.

European and American roulette may look nearly identical to the untrained eye, but the math differs wildly.
The Extra Green Zero
A European roulette wheel features 37 pockets in total: the numbers 1 through 36, plus a single zero (0).

The addition of the 00 pocket effectively doubles the casino's built-in mathematical advantage over the player.
The green zeros represent the house edgeAmerican roulette includes the 0 and the 00European roulette only utilizes the single 0 Why the House Edge Matters
With a house edge of 2.70%, European roulette is relatively fair compared to many other casino games.

Statistically, for every $100 you wager, you expect to lose $2.70 on European and $5.26 on American.
The En Prison and La Partage Rules
Some European, and particularly French, roulette tables offer player-friendly rules called "La Partage" or "En Prison."

This makes French roulette one of the most mathematically favorable table games on the entire casino floor.
VersionZero PocketsHouse EdgeEuropeanOne (0)2.70%AmericanTwo (0, 00)5.26%
Online casinos almost always offer both, so be vigilant and always click on the European wheel.