From single-zero odds and La Partage to bonuses, table layouts and live play, the guide explains what affects European roulette.
What to check before choosing a UK roulette casino
Choosing among European roulette casinos UK players can use should begin with the operator, not with its welcome offer or the appearance of a particular table. A suitable site needs to show that it is allowed to serve British customers, explain how its games work, and give you practical control over your account.
Confirm the UKGC licence
The UK Gambling Commission, usually shortened to UKGC, is the sole regulator of online casino activity in Great Britain. A remote operator offering real-money gambling to customers in England, Scotland or Wales must hold the relevant Gambling Commission licence, wherever the business itself is based.
Do not rely on a badge placed in the website footer. Find the operator’s licence number and check it against the UKGC public register before depositing. The business name, trading name and domain should correspond with what you are checking. If the details do not match, stop there rather than assuming that a familiar brand or polished website is sufficient.
A platform without a valid UKGC licence cannot legally offer real-money live roulette to British residents. An offshore licence is not a substitute for the British licence required for operators selling gambling to Great Britain. This check applies whether you are looking for ordinary online casinos with European roulette, a live table or a VIP service.
You should also look for clear ownership and support information. A casino that makes it difficult to identify the operating company, contact customer support or locate its terms gives you less information to assess before money enters the account. UKGC licensees must provide an internal complaints process and access to an approved Alternative Dispute Resolution service, so those details should be easy to find.
Make RTP information easy to reach
A responsible choice should not require detective work to find the game’s return information. Look for the European roulette game’s information panel, rules or help file before you register or deposit. RTP information should be accessible, readable and connected to the actual game you intend to play, rather than hidden in a general page about casino products.
This matters when comparing European roulette casinos 2026 listings or deciding which of several tables suits you. A page may use attractive labels such as “best European roulette casinos”, “European VIP roulette” or “European roulette online”, but a label is not evidence of better terms. Check the individual game information instead.
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Be careful with categories that blur different products. European roulette is a table game; European roulette slots may be a search phrase or a casino category, but it does not tell you that a slot has the same rules, return information or risks as roulette. Read the title and rules of the selected game so you know what you are opening.
The same principle applies to demonstrations and real-money versions. A demo can help you understand the interface, but it is not a reason to assume that every table at the operator has identical information or conditions. Before switching to real-money play, open the live game details and confirm that the displayed rules and RTP information relate to that specific title.
Check account safeguards before depositing
Account controls are part of the choice, not an afterthought. Remote operators must prompt new customers to set a financial limit before the first deposit and provide accessible account-level limit controls. Check where those controls sit and whether you can find them without contacting support. If the route is unclear, reconsider whether the account will be easy to manage when you need to pause or reduce activity.
UKGC-licensed casinos must also provide responsible gambling tools, including self-exclusion. UK-licensed live casino operators must offer deposit limits, loss limits, session-time reminders, reality checks, cool-off periods and GamStop self-exclusion. These features should be described in plain language, with instructions for using them. GamStop is an industry body, so its self-exclusion service should not be confused with an operator’s own temporary account break.
Age verification is another basic check. Operators must verify a customer’s age before allowing them to deposit funds into a gambling account. Treat requests for verification as part of the legal process, not as a reason to send money first or bypass the check.
Payment information can reveal whether the operator follows the applicable rules. UK-licensed casinos cannot accept credit cards for gambling. Remote operators also cannot accept credit-card funding routed through a money service business, and they cannot accept wallet payments where the wallet permits credit-card funds to be used for gambling. A payment page should therefore make the available methods and restrictions clear.
DO
- Check the operator’s licence number against the UKGC public register
- Confirm the business name and domain match the register
- Locate clear ownership and customer support information
DON’T
- Rely solely on a licence badge placed in the website footer
- Assume a polished website is a substitute for a valid licence
- Ignore mismatches between trading names and official registration
Finally, check how the operator handles concerns. UKGC licensees must maintain a complaints route and provide access to approved ADR. They are also required to contribute to the Research, Education and Treatment levy. These points do not make any spin safer, but they show whether the casino’s public-facing account arrangements match the responsibilities expected of a UKGC-licensed operator. That is a more useful basis for choosing than a “best European roulette casinos UK 2026” label alone.
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European roulette: the single-zero wheel and its odds
European roulette is built around a wheel with one green zero and the numbers 1 to 36. That gives the wheel 37 pockets in total. When you play European roulette online, the game reproduces this same single-zero structure, whether the result is generated by software or shown through a live wheel.
The single zero is the feature that defines the European version. It is not an ordinary winning number for red, black, odd, even, high or low selections. Instead, it is an additional pocket that sits outside those balanced groups. Its presence is why the casino has an advantage over time, even though many of the numbered and colour-based options appear evenly divided.
How many numbers are on a European roulette wheel?
There are 37 pockets: 36 numbered pockets, marked from 1 through 36, and one zero pocket. The wording can cause confusion because people sometimes ask how many “numbers” are on the wheel and mean only the numbered values. In that narrower sense, there are 36 numbers. For the probability of a spin, however, the zero must be included, so the relevant total is 37 pockets.
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Every spin is a separate random event. The wheel does not remember previous results, and a run of red does not make black more likely on the next spin. The same applies to individual numbers and to the zero. A number that has not appeared for a long time has no stored advantage over a number that appeared on the previous spin.
This matters when you assess an online European roulette casino. The visual layout may make the game look orderly, but the result is still determined by chance. A sequence of results can look meaningful without changing the underlying odds of the next spin.
Why the single zero gives the casino an edge
The numbered sections from 1 to 36 can be divided into familiar groups, including red and black, odd and even, and lower and higher numbers. These groups do not cover the zero in the same way. When the ball lands in that green pocket, bets based on those two-way divisions do not receive a winning result.
That extra pocket is the mathematical reason European roulette does not offer a perfectly even contest between player and casino. Across a sufficiently large number of spins, the casino’s built-in advantage is expressed as a house edge of 2.70%. This is not a prediction about what will happen during one session. You may see a short run that appears favourable or unfavourable, but the edge describes the game’s long-term mathematical balance.
The figure applies to the standard European wheel. It does not mean that every player loses 2.70% on every spin, nor does it set a fixed result for an individual visit to an online roulette casino. Short-term outcomes can vary widely because each result is random. The percentage explains the structural disadvantage built into the wheel, rather than the exact outcome of your own play.
The single zero is the feature that defines the European version, resulting in a house edge of 2.70%.
European and American roulette are not the same
The difference between European and American roulette is mainly visible in the green pockets. American roulette has the numbers 1 to 36, a single zero and a double zero, marked 00. That makes 38 pockets in total, rather than the 37 found on the European wheel.
The additional green pocket changes the mathematical balance. American roulette has a house edge of 5.26%, compared with 2.70% for European roulette. The higher figure is not caused by a different result generator or by the appearance of the table. It comes from adding another pocket without adding another corresponding opportunity for the player’s even-money groups to cover it.
For that reason, checking the wheel type is important before you select a game at an online casino. A title containing the word “roulette” does not by itself tell you whether the table has a single zero or a double zero. Look for the stated wheel format in the game information and confirm that the displayed layout contains one green zero when you want the European version.
A European roulette casino UK player may encounter several ways of presenting the same basic wheel: software-based play, an animated table or a streamed physical wheel. Those presentation differences do not turn the single-zero wheel into a different mathematical game. The key starting point remains the same: 37 pockets, including one zero, with a 2.70% house edge in the standard European format.
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This baseline helps separate the wheel’s design from the way an operator presents it. A polished interface cannot remove the zero, and a sequence of recent results cannot alter its role. When you understand that structure, the odds shown for an online European roulette game become easier to read without mistaking a run of results for a change in the underlying probability.
How roulette bonuses count towards wagering requirements
A roulette bonus is not necessarily credited at the same rate as the spin itself. The important term is game weighting: the percentage of each qualifying roulette wager that is applied to the bonus wagering requirement. Before you use bonus funds on European roulette, check whether the terms refer to the game, the table format, or both.
Most UK operators apply a game weighting of 10% to 20% to roulette wagers. In practical terms, only that stated share of your eligible stake helps reduce the requirement. The rest of the wager may still be a valid bet, but it does not advance the bonus balance at the same rate. This is why a promotion can look suitable for an online European roulette casino while being less useful once its contribution table is read closely.
The rate may also depend on how the roulette game is delivered:
- RNG roulette may count at 100% under the operator’s bonus rules.
- Live roulette may count at 10% or 20%.
- Some offers treat a live table differently from an automated European roulette game, even when the betting layout appears similar.
- A no-deposit promotion can have separate restrictions for live casino games.
These distinctions are not universal. A specialist review reports that roulette contribution can differ between operators and formats, but the operator’s own promotion terms are the controlling document. Treat outside descriptions as a prompt to check rather than as a substitute for the wording attached to the offer.
How to read the calculation
Look for a section headed “casino contribution”, “game weighting”, or “wagering contribution”. It should tell you whether the listed rate applies to the stake, whether the game is eligible at all, and whether a particular table type is excluded. The terms may separate standard RNG games, live-dealer roulette, speed roulette and other branded versions.
Do not assume that the phrase “European roulette” is enough. A game described as free European roulette or a simulated roulette product may sit outside a real-money promotion entirely. Conversely, an online European roulette title may qualify at a different rate from a live European table. The name of the wheel does not settle the bonus treatment; the offer’s eligibility list does.
Understanding game weighting
Most UK operators apply a game weighting of 10% to 20% to roulette wagers. This means only that specific share of your qualifying stake helps reduce the bonus wagering requirement. RNG roulette may count at 100%, while live roulette often counts at 10% or 20%.
Also check whether the promotion requires the bonus balance or the original deposit to be wagered first. Other conditions can govern maximum bet sizes, game restrictions and the point at which winnings become withdrawable. Those details belong to the same decision: a generous-looking bonus is of limited use if your preferred roulette format does not contribute as expected.
The UK wagering cap
Since January 2026, UK regulations cap bonus wagering requirements at a maximum of 10x for all UKGC-licensed operators. That cap limits the number of times a qualifying bonus must be wagered before the relevant conditions are met. It does not mean that every roulette wager receives full weighting, nor does it remove game exclusions.
For instance, a promotion can have a wagering requirement within the legal cap while assigning live roulette a lower game weighting than RNG roulette. The two points need to be read together: the cap concerns the size of the requirement, while game weighting determines how quickly a particular type of play contributes towards it.
A specialist review identifies this 10x ceiling as applying from January 2026, but always read the current operator terms attached to the promotion. Check the stated contribution for European roulette, whether live play is excluded, and whether the offer is a deposit bonus or a no-deposit bonus. If the wording is unclear, do not rely on a casual interpretation of “all casino games”. The precise contribution table is what tells you whether the bonus matches the way you intend to play.
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How to play European roulette and understand the payouts
European roulette is straightforward once you separate the betting stage from the spin. You choose a stake, select one or more positions on the betting area, and confirm your wager before the ball is released. The wheel then determines the winning number. If your selection matches the result, the payout is based on the type of bet you placed.
When you play European roulette online in the UK, the game normally shows the available betting area beside an animated wheel. Select your stake value, click the desired number or betting section, and check that the wager has been accepted before the betting period closes. Some games let you repeat the same bet on the next spin, but you should review the selected chips rather than assume that a previous wager has carried over.
For a free-play version, no deposit is required and the balance is simulated. A real-money game uses funds from your casino account, so check the stake shown on screen before confirming. The same basic process applies whether you choose a standard table or a European VIP roulette casino table: select the bet, confirm it, wait for the result, and review the settlement.
Before you play
- Select your stake value
- Choose your number or betting section
- Confirm the wager has been accepted
- Check that the displayed rules and RTP relate to the specific title
Inside bets
Inside bets are placed on individual numbers or small groups of numbers. They offer a more concentrated outcome: the wager covers fewer pockets, but the stated payout is higher if the ball lands within the selected area.
A straight-up bet covers one number. On European roulette, it pays 35:1. A winning stake of one unit therefore produces thirty-five units in winnings, with the original stake returned separately according to the table’s settlement display. The same straight-up payout applies to American roulette, although that variant has a different wheel structure.
A split bet covers two adjacent numbers. It pays 17:1 when the winning number is one of the two selected positions. This can be useful when you want to cover a pair rather than commit the whole wager to one number. The adjacent numbers must be connected on the table layout, so select the shared line between them rather than clicking only one number.
Other inside-bet types may be available, including groups covering three or more numbers. Their payout depends on the number of positions covered. Read the chip label or paytable before confirming if you are unfamiliar with the selection.
Outside bets
Outside bets cover broader groups and are easier to identify during a quick round. The common even-money choices are red or black, odd or even, and low or high. Each pays 1:1 if the result matches the selected category.
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A 1:1 payout returns winnings equal to the stake, with the stake handled according to the table’s settlement rules. For instance, a winning red bet pays the same amount as the amount placed on red. These bets do not require you to choose a particular number, but they still depend on the single spin and can lose when the result falls outside the selected category.
Before you play European roulette for real money, open the paytable and confirm the bet type, payout and minimum stake shown by that game. If you are learning how to play European roulette, starting with a demo can help you recognise the controls without risking funds. Once you understand how bets are selected and settled, you can decide whether the format suits your budget.
Single-zero bets, La Partage and the limits of betting systems
On a European roulette single-zero table, the betting choices are commonly divided into inside bets and outside bets. The difference is not only where you place the chip on the layout; it also affects how many numbers a wager covers and how its return is calculated.
A straight-up bet is the most focused inside bet: you select one number. On the European single-zero wheel, that number wins if the ball settles in its pocket, and the payout is 35:1. The same payout applies to a straight-up bet on American roulette, but the additional green pocket on that wheel changes the underlying odds. A single-number wager therefore offers a larger stated return than an even-money wager, while relying on one precise outcome.
Straight-up Bet
Covers one single number with a payout of 35:1.
Split Bet
Covers two adjacent numbers with a payout of 17:1.
Outside Bets
Covers broader groups like red/black or even/odd with a 1:1 payout.
Outside bets cover broader groups of results. Red or black, even or odd, and high or low are even-money options: a winning stake returns at 1:1. They are easier to understand because the selected category contains many numbers, but the zero is not red or black, odd or even, or high or low. It remains a losing result for these bets under the standard rule. That is where the single-zero wheel matters: the zero gives the casino an advantage even when the selected outside category appears to divide the numbered pockets into two equal groups.
What La Partage changes
La Partage is a rule that can apply to even-money bets on a European roulette table. If the ball lands on zero, half of the stake is returned instead of the entire wager being lost. This softens the effect of zero for red, black, even, odd, high and low bets.
Where La Partage is offered, the house edge on those even-money bets falls to 1.35%. It does not turn the wager into a fair bet, and it does not change the result of the spin. The ball still lands in one pocket, and a bet placed on the wrong category still loses according to the table rules. La Partage only changes what happens to an even-money stake when zero appears.
Check the rules displayed for the specific table before betting. The presence of a single zero does not, by itself, confirm that La Partage applies. The wording may also distinguish between eligible even-money bets and other betting options, so a player should not assume that a single-number wager receives the same treatment.
Why betting systems cannot predict the wheel
The Martingale system is based on doubling the bet after each loss. Its appeal comes from the idea that a later win might recover earlier losses. That idea does not give the next spin any memory. Each outcome remains governed by chance, and no roulette strategy can predict where the ball will finish.
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A losing streak can make the required stake grow quickly under Martingale. That can place serious pressure on your bankroll before a win arrives. It may also leave you unable, or unwilling, to continue increasing the wager. A run of losses is not evidence that a particular number, colour or parity result is now “due”; it is simply a difficult sequence for the balance supporting the bets.
Treat single-number and even-money wagers as different betting options, not as tools for controlling the outcome. The European single-zero wheel and La Partage can define the mathematical terms, but neither can remove chance from the spin.
RNG, speed and live roulette: how the wheel format changes play
When you choose an online casino with European roulette, the delivery format affects the pace, minimum stake and feel of the game. It does not automatically change the identity of the wheel. A European roulette wheel has 37 pockets: numbers 1 to 36 and one green zero. That remains the relevant structure whether the result comes from software, an automated wheel or a live table.
RNG roulette
RNG roulette uses a random number generator to produce each simulated spin. There is no physical European roulette wheel on screen; the software generates the result and displays it through the game interface. This format is suited to players who want to place bets and move quickly between spins without waiting for a table cycle.
Minimum stakes can also be lower than at some live tables. RNG roulette is available with minimum bets often starting at 10p, although the amount shown on a particular European roulette casino should always be checked in the game itself. A lower minimum can help you keep each individual wager small, but it does not alter the underlying chance of the result.
Format Differences
While the single-zero wheel remains the core structure, RNG, speed, and live formats differ in pace and minimum stakes.
Speed roulette
Speed roulette is designed to reduce the time between spins. A specialist review reports that some speed formats can exceed 150 spins per hour, whereas a standard table is described as running at 80–100 spins per hour. Treat those figures as format-specific rather than a promise about every game labelled “speed”.
The faster rhythm changes how quickly money can move through an account. You may have less time between results to reconsider the next wager, so setting a spending limit before opening the game matters more than chasing a particular pace. Speed is a presentation feature, not a method for improving roulette outcomes.
Live and automated tables
Live roulette places the game in a studio environment, while an automated table uses a physical wheel without requiring a dealer to conduct each round. Both can provide the visual experience of a European roulette casino wheel, including the green zero, but their minimum stakes and round timing can differ.
UK live roulette table minimums can start at 10p. A specialist review reports that auto-roulette and speed formats sometimes begin at 5p. The word “can” is important: the displayed minimum depends on the operator, table and format available to you.
A live table may feel slower because its rounds follow the operation of a physical wheel. Speed and automated versions are more compressed, while RNG games generally remove physical-table pauses altogether. Compare the minimum stake and the time between spins before choosing an online casino with European roulette, especially if you prefer a steady pace rather than frequent betting decisions.
Reading the European roulette table layout
A European roulette casino table is a diagram of the wheel’s possible results. It gives you a clear place for each wager before the croupier, dealer or software starts the spin. The wheel itself has 37 pockets: the numbers from 1 to 36 and one zero. The table layout represents those same outcomes in a betting grid.
The numbered grid
The central part of the European roulette table layout contains the numbers 1 to 36. They are arranged in horizontal rows, with three adjacent numbers in each row. The grid is not a drawing of the pockets in wheel order. Instead, it groups the numbers into a compact pattern so that you can select a single number or a position covering neighbouring numbers.
The lines between the numbered spaces matter. A wager placed inside one numbered square refers to that number alone. A chip positioned on a boundary can cover more than one numbered space, depending on the marked position. You do not need to memorise the wheel’s pocket sequence to recognise these areas: read the numbers printed on the cloth and place the chip precisely where the chosen spaces meet.
The zero is separate from the main numbered block. On a standard European layout, its own green space sits apart from the red and black numbered spaces. This makes the single-zero structure easy to identify when checking an online table or a screenshot before playing. If a table shows more than one green zero space, it is not displaying the standard European arrangement.
The outer betting areas
Around the numbered grid are broader sections for outside bets. Their labels commonly include red and black, even and odd, and high and low. These areas cover groups of results rather than one printed number. The zero does not belong to the red, black, even or odd groups, so its separate position on the layout is important.
Table Layout
Attention Always check that the chip appears on the intended square, line, or outside section before confirming your wager.
You may also see areas connected with columns and other grouped selections around the main grid. Their exact presentation can vary between an online European roulette table and a physical casino table, but the principle remains the same: the central grid identifies individual results, while the surrounding spaces identify wider groups.
Before confirming a wager, check that the chip appears on the intended square, line or outside section. A neat table layout cannot prevent a mispositioned chip, and a European roulette strategy does not change what the marked betting area represents. Recognising the structure first lets you read the options without confusing the wheel’s pockets with the table’s visual arrangement.
European roulette demos and Lightning-style variants
A European roulette demo lets you explore the game without placing a real-money wager. The result is generated by software rather than by a physical wheel, so the screen simulates the spin, ball movement and winning number. This makes a demo useful for learning the sequence of a round and becoming familiar with the interface before deciding whether to play for money.
You may see different presentation styles described as a 3D European roulette game, European Roulette Gold, European Roulette Platinum or a European roulette slot demo. These labels can refer to the visual design or the way the game is packaged. They do not, by themselves, establish that the game uses a physical wheel or that its rules match a particular live table. Check the displayed rules before relying on the title. A conventional European roulette demo should clearly identify the single-zero format and show the available betting areas.
The important distinction is between simulated play and a live wheel. In an RNG demo, a random number generator selects the outcome. The graphics then represent that result on screen. There is no dealer’s physical ball drop behind the animation. A live version, by contrast, uses a streamed wheel and dealer, so the visible spin comes from an actual studio game rather than a software simulation.
What changes in Lightning Roulette?
Lightning Roulette is a roulette-branded variant that adds special treatment to selected numbers. Its headline feature is a possible multiplier attached to a straight-up winning number. The multiplier is not guaranteed on every number or every spin, so the rules displayed in the game remain important.
Without a lightning multiplier, a straight-up wager in this format pays 29:1 rather than the conventional 35:1. A specialist review reports that the outside bets retain standard roulette payouts, without the Lightning modification. In practical terms, a red or black, even or odd, or high or low wager is not transformed into a multiplier bet merely because it is placed on a Lightning table.
That difference matters when comparing a standard European roulette demo with a Lightning-style game. The familiar layout may look similar, but the payout schedule is not necessarily the same. Read the in-game paytable for straight-up bets, special-number treatment and any stated conditions before moving from demo mode to real-money play.
A demo can show how the interface handles a multiplier and how winning bets are displayed, but it cannot turn a random outcome into a predictable one. Treat it as a way to understand the format, not as evidence that a particular number is becoming more likely.
How does Lightning Roulette differ?
Lightning Roulette adds a possible multiplier to selected straight-up winning numbers. Without a multiplier, a straight-up wager in this format pays 29:1 instead of the standard 35:1.
What is La Partage rule?
La Partage is a rule where, if the ball lands on zero, half of the even-money stake is returned to the player, reducing the house edge on those bets to 1.35%.
What to expect from a live European roulette dealer
A live European roulette table brings the casino floor to your screen. The game is streamed from a studio, where a human dealer operates a physical wheel and releases a real ball. You see the ball drop rather than watching a purely computer-generated animation, while the betting interface shows when bets open and close.
The dealer announces the result, the winning number is recorded, and the table then prepares for the next round. The experience is closer to sitting at a conventional casino table, although you still place wagers through the online interface. Clear camera coverage should let you follow the wheel, ball and dealer without confusion. If the stream, result display or betting controls do not match, stop using the table and contact the operator.
For a British player, legality depends on the operator rather than the appearance of the studio. The UK Gambling Commission is the sole regulator of online casino activity in Great Britain. A platform without a valid UKGC licence cannot legally offer real-money live roulette to British residents. Before depositing, verify the operator’s licence number on the UKGC public register. The account should also require age verification before you are allowed to deposit funds.
Safer-play controls at a live table
UKGC-licensed live casino operators must provide more than a roulette stream. They must offer tools that help you control the account and take a break when needed, including:
- deposit limits;
- loss limits;
- session-time reminders;
- reality checks;
- cool-off periods; and
- GamStop self-exclusion.
These controls should be accessible from your account, not hidden behind an extended support process. Set limits before a live European roulette session begins, particularly because the social presentation can make the table feel more immediate than an ordinary game screen. A dealer’s conversation and the visible pace of play do not change the underlying chance of the result.
If gambling no longer feels controlled, use a cool-off period or self-exclusion rather than trying to recover losses at the same table. GamStop self-exclusion is one of the protections UKGC-licensed operators must support. You should also be able to use the casino’s internal complaints process and, where necessary, an approved Alternative Dispute Resolution service.
European, American and French roulette compared
The main difference between European and American roulette is the number of pockets on the wheel. European roulette has 37 pockets: numbers 1 to 36 and one zero. American roulette adds a second green zero, giving it 38 pockets in total.
That extra pocket changes the mathematical balance against the player. The house edge on European roulette is 2.70%, while American roulette has a house edge of 5.26%. In practical terms, the additional zero gives the casino a larger statistical advantage over a long run of play. This is why checking the wheel layout matters when choosing an online European roulette casino game: a similar-looking interface may represent a less favourable variant if it includes double zero.
French roulette is generally grouped with the single-zero family, but its named rules can make even-money betting more favourable. La Partage returns half of an even-money stake when the ball lands on zero, reducing the house edge on those bets to 1.35%. En Prison can also retain an even-money wager after a zero, rather than settling it as a complete loss immediately. When these rules apply, French roulette has the lowest house edge among the standard variants.
The comparison can therefore be summarised simply:
| Variant | Wheel feature | House edge |
|---|---|---|
| European | 37 pockets, including one zero | 2.70% |
| American | 38 pockets, including zero and double zero | 5.26% |
| French | Single-zero format with La Partage and En Prison where offered | Lowest among standard variants |
For an online European roulette casino game, the single-zero layout is the defining point to confirm. American roulette vs European roulette is not merely a naming difference: the extra pocket changes the edge. French roulette may improve the position on qualifying even-money bets, but only when its stated rules are actually in force.