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

Understanding the subtle differences between the wheels is crucial for maximizing your chances of winning.
The Extra Green Zero
The single most important difference between the two games lies entirely in the number of green zero pockets.

While the payouts remain exactly the same, your odds of hitting a specific number decrease on the American wheel.
European wheel has 37 total pocketsAmerican wheel has 38 total pocketsBoth versions pay 35 to 1 on a single number bet The Mathematics of the Two Wheels
Because the European wheel has only one zero, the house edge is a very reasonable 2.70%.

There is absolutely no mathematical justification for ever choosing to play American roulette if European is available.
Lowering the Edge Even Further
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.
GameWheel NumbersEdge with La PartageFrench371.35%American38N/A
The conclusion is incredibly simple: you should always seek out and exclusively play European or French roulette.