Learning About Roulette: Key Differences Between American and European Roulette

American and European roulette follow the same basic rules, with players placing wagers on where a ball will land on a spinning wheel. 

Despite these similarities, the two versions differ in several important ways that affect the mathematical odds, the house edge, and the overall online casino gameplay experience.

Understanding these differences can help Genting Casino players recognise how each version operates without relying on assumptions based on appearance alone.

• Understanding the Two Roulette Variants
• Wheel Layout and Number Differences
• How the House Edge Differs
• Odds and Probability Comparison
• Gameplay Variations
• Which Version Is More Common?

Understanding the Two Roulette Variants

European roulette is regarded as the traditional version of the game and uses a wheel containing 37 numbered pockets.

American roulette uses a different wheel with 38 numbered pockets due to the addition of a second green pocket. Although this appears to be a minor change, it affects the probability of every wager available on the table.

Both versions are widely available in online casino platforms and live casino environments, although European roulette is generally more common in the UK market.

Wheel Layout and Number Differences

The most noticeable difference is the wheel itself.

Feature	European Roulette	American Roulette
Total pockets	37	38
Green pockets	One (0)	Two (0 and 00)
Number sequence	Different wheel order	Different wheel order
Extra double zero	No	Yes

The additional double zero pocket found on the American wheel creates an extra possible outcome whenever the ball is spun. This changes the overall probability of every wager compared with European roulette.

How the House Edge Differs

One of the biggest differences between the two games is the house edge.

Because European roulette has only one zero pocket, it offers a lower house edge than American roulette. The additional double zero in the American version increases the advantage held by the casino.

Version	Zero Pockets	Relative House Edge
European Roulette	One	Lower
American Roulette	Two	Higher

The difference may appear small, but it applies to every spin and affects all standard betting options over time.

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Odds and Probability Comparison

The available betting options are largely the same across both versions. Players can choose from inside and outside bets, covering individual numbers, groups of numbers, colours, or odd and even outcomes.

However, the probability of winning any wager differs because American roulette contains one additional pocket.

Although the betting layout looks very similar, the mathematical odds are different due to the extra numbered pocket rather than the betting rules themselves.

Bet Type	European (37 pockets)	American (38 pockets)
Straight-up (single number)	1/37 (~2.70%)	1/38 (~2.63%)
Red/Black	18/37 (~48.65%)	18/38 (~47.37%)
Odd/Even	18/37 (~48.65%)	18/38 (~47.37%)
High/Low	18/37 (~48.65%)	18/38 (~47.37%)
Dozen (12 numbers)	12/37 (~32.43%)	12/38 (~31.58%)
Column (12 numbers)	12/37 (~32.43%)	12/38 (~31.58%)

Gameplay Variations

The gameplay remains familiar across both versions, but there are several distinctions worth noting.

Feature	European Roulette	American Roulette
Wheel design	Single zero	Single zero and double zero
Number of possible outcomes	Fewer	More
Standard betting layout	Similar	Similar, with an additional double-zero section
House advantage	Lower	Higher

Most gameplay differences are therefore based on the wheel configuration rather than how bets are placed or how the game is played.

American Roulette by Evolution

Genting Casino Tip: When comparing roulette variants, look beyond the table layout and check how many zero pockets are present. Understanding the wheel configuration provides a clearer picture of the mathematical differences before joining a live casino table or exploring roulette options within an online casino.

Which Version Is More Common?

European roulette is generally the standard version offered across the UK and much of Europe. Many live casino studios focus on European roulette because it aligns with player expectations in these regions.

American roulette remains available at many online casino platforms, particularly those serving international audiences, although it is less common within the UK than its European counterpart.

Making an Informed Choice

American and European roulette share the same core gameplay, but the extra double zero pocket in the American version changes the mathematical odds and increases the house edge. For many players, understanding these structural differences is more valuable than focusing solely on the appearance of the wheel.

At Genting Casino, learning how different roulette variants work can help players better understand the games available while making informed decisions and always keeping responsible gambling in mind.

Whether comparing different roulette variants or learning about casino games, responsible gambling should always come first. Understanding how the house edge and probabilities differ can help players make informed decisions rather than relying on misconceptions. Only participate if gambling remains an affordable form of entertainment, set personal limits before playing, and never attempt to recover previous losses. If gambling stops being enjoyable, taking a break or seeking support is the safest course of action.

FAQs

What is the main difference between American and European roulette?

The main difference is the wheel. European roulette has a single zero, while American roulette includes both a zero and a double zero.

Why does American roulette have a higher house edge?

The additional double zero pocket increases the number of possible outcomes, which raises the casino's mathematical advantage.

Are the betting options the same in both versions?

Most standard inside and outside bets are available in both games, although the American layout includes an additional section for the double zero.

Is European roulette more common in the UK?

Yes. European roulette is generally the standard version found across UK casinos and many live casino tables.

Does understanding the differences improve the chances of winning?

No. Roulette outcomes remain random and based on chance. Understanding the differences simply helps players recognise how the two versions operate and how their probabilities differ.