Online Roulette: European vs American Wheels, Odds & RTP

Roulette is one of the oldest and most recognisable casino games in the world, and it translates beautifully to online play. The spinning wheel, the bouncing ball, the grid of numbers — all of it survives the move from felt to screen, whether you are playing a software (RNG) version or a live dealer stream. For players in Luxembourg, the practical reality is that domestic online gambling sits under the state monopoly (Loterie Nationale), so the realistic option for casino-style roulette is an internationally licensed operator — typically regulated by the Malta Gaming Authority (MGA) or under a Curaçao licence — that accepts Luxembourg residents.

This guide walks through everything that actually matters before you place a chip: the crucial difference between the European and American wheels, how each bet works, the true odds behind the payouts, what RTP really means, and how live roulette compares to RNG tables. All of it applies equally whether you play on desktop or mobile.

18+ only. Roulette is a game of chance with a built-in house edge — there is no strategy that overcomes it long term. Play for entertainment, never to chase losses or make money. If gambling stops being fun, get free, confidential support at begambleaware.org.

European vs American roulette: the single most important choice

If you take away one thing from this page, make it this: always choose European roulette over American roulette when both are available. The reason is purely mathematical.

• European wheel — 37 pockets: numbers 1–36 plus a single zero (0).
• American wheel — 38 pockets: numbers 1–36 plus a single zero (0) and a double zero (00).

That extra 00 pocket does nothing for you as a player. Payouts on the two wheels are identical, but the American wheel has one more losing number, which quietly widens the house edge.

Wheel type	Pockets	House edge	RTP (return to player)
European (single zero)	37	2.70%	97.30%
American (double zero)	38	5.26%	94.74%

In plain terms: over the long run, American roulette costs you nearly twice as much per unit staked as the European version. There is no upside to the double zero. If a site only offers American roulette, that is a reason to look elsewhere.

French roulette — the best odds of all (when the rules apply)

French roulette uses the same single-zero wheel as European roulette, but adds player-friendly rules on even-money bets:

• La Partage — if the ball lands on zero, you get half your even-money stake back.
• En Prison — if the ball lands on zero, your even-money bet is “imprisoned” for the next spin instead of being lost outright.

When one of these rules is in force, the house edge on even-money bets (red/black, odd/even, high/low) drops to roughly 1.35%. If you like betting on the outside chances, French roulette with La Partage is mathematically the sharpest table in the building.

The two main types of online roulette

RNG (software) roulette

RNG roulette is generated by a random number generator. There is no physical wheel — the outcome is decided by certified software. It is fast, plays instantly, is available around the clock, and usually allows lower minimum stakes. Reputable versions are independently tested (for example by eCOGRA, iTech Labs or GLI) to confirm the results are genuinely random and that the published RTP is accurate.

Live dealer roulette

Live roulette streams a real human croupier spinning a real wheel from a studio, in real time. You place bets through the interface while watching the ball on video. It recreates the atmosphere of a physical casino and removes any doubt about a “hidden” algorithm, because you can watch the wheel yourself.

Crucially, the maths does not change between the two formats. The house edge is identical for RNG and live dealer roulette: a live European table is still 2.70%. You are not paying a penalty for the live experience in terms of odds — the difference is purely presentation, pace and social feel. Live tables tend to be slower (real spins take time) and often carry slightly higher minimum bets, while RNG tables are faster and cheaper to sit at.

Feature	RNG roulette	Live dealer roulette
Outcome decided by	Certified software (RNG)	Real wheel, real croupier
Speed	Very fast, on-demand	Slower, real-time spins
Typical minimum stake	Usually lower	Often higher
Atmosphere	Functional	Immersive, social
European house edge	2.70%	2.70%

The common roulette bets

Roulette bets split into two families: inside bets (on specific numbers, higher payouts, longer odds) and outside bets (on large groups, lower payouts, better hit frequency).

Inside bets

• Straight up — one single number. Pays 35 to 1.
• Split — two adjacent numbers. Pays 17 to 1.
• Street — three numbers in a row. Pays 11 to 1.
• Corner (square) — four numbers meeting at a corner. Pays 8 to 1.
• Line (six line) — six numbers across two rows. Pays 5 to 1.

Outside bets

• Column — 12 numbers in a vertical column. Pays 2 to 1.
• Dozen — 1–12, 13–24 or 25–36. Pays 2 to 1.
• Red / Black — colour of the winning number. Pays 1 to 1 (even money).
• Odd / Even — pays 1 to 1.
• High / Low (1–18 or 19–36) — pays 1 to 1.

Odds, payouts and RTP explained

Here is where beginners often get caught out. The payouts look generous, but they are calculated as if the zero (and, on American wheels, the double zero) did not exist. That gap between the true odds and the payout odds is exactly where the house edge lives.

Take a straight-up bet on a European wheel. There are 37 pockets, so your real chance of winning is 1 in 37. But the payout is 35 to 1. If the game were fair, it would pay 36 to 1. That missing single unit is the 2.70% house edge in action.

Bet	Numbers covered	Payout	Win chance (European, 37 pockets)
Straight up	1	35:1	2.70%
Split	2	17:1	5.41%
Corner	4	8:1	10.81%
Six line	6	5:1	16.22%
Column / Dozen	12	2:1	32.43%
Red/Black, Odd/Even, High/Low	18	1:1	48.65%

Two important takeaways:

1. The house edge is the same on every standard bet on a European wheel — 2.70%. Betting on a single number instead of red/black does not change the mathematical edge; it only changes the variance (how wildly your balance swings). Straight-up bets pay big but hit rarely; even-money bets hit often but pay small.
2. No betting system changes the edge. The Martingale (doubling after a loss), the Fibonacci, the D’Alembert and every other progression alter the shape of your results, not the long-run expectation. They can produce many small wins followed by one large, painful loss, and they run headlong into table limits. Treat them as ways to structure play for fun, not as ways to beat the game.

What RTP means in practice

RTP (return to player) is simply 100% minus the house edge, expressed over a very long run of spins. European roulette’s 97.30% RTP means that, theoretically, €97.30 is returned for every €100 staked across an enormous number of spins — not in any single session. In the short term, anything can happen, which is exactly why roulette stays fun and exactly why you should only ever stake money you are comfortable losing.

Choosing a roulette site as a Luxembourg player

Because there is no locally licensed commercial online casino in Luxembourg, players who choose to play do so on international sites. When you assess an operator, prioritise these points — they map directly to our wider operator ranking and review criteria:

• Licensing. A recognised regulator such as the MGA (Malta) offers stronger player protections than a lighter-touch Curaçao licence. Check the licence number and verify it on the regulator’s website.
• Game provider. Well-known studios (for live roulette in particular) tend to publish RTPs and submit to independent testing.
• European tables available. Make sure single-zero European or French roulette is offered — not only American.
• Payments in EUR. Confirm the site supports euro deposits and withdrawals and check for fees and processing times.
• Transparent terms. Any promotion should have clearly stated wagering requirements. We deliberately avoid quoting specific bonus figures here because they change constantly and vary by player — always read the current terms on the operator’s own page.
• Responsible-gambling tools. Deposit limits, session reminders, cool-off and self-exclusion should be easy to find and easy to activate.

A quick, sensible way to play

• Set a budget for the session before you start, and treat it as spent.
• Prefer European or French roulette; avoid American where you have the choice.
• Understand that outside bets last longer for the same bankroll, while inside bets are higher risk, higher reward.
• Use the operator’s deposit and time limits from day one.
• Never chase losses. A losing session is a normal outcome, not a problem to “fix” with a bigger bet.

Responsible gambling

Roulette is designed to be entertainment, and the house edge guarantees that, over time, the game keeps a small percentage of everything staked. That is by design — it is the price of the fun, not a temporary state you can outlast. Set limits, keep gambling social and light, and take a break whenever it stops feeling that way. If you are worried about your own play or someone else’s, free and confidential help is available 24/7 at begambleaware.org. You must be 18 or over to play.