The Wheel You Are Playing
You sit down, exchange cash for coloured chips, and look at a wheel with 37 numbered pockets. One of those pockets is green and marked with a single zero. That pocket is the entire reason this game has a different arithmetic from the roulette wheel with two green pockets, and it is the first thing to understand before you place anything.
A European roulette wheel carries the numbers 0 through 36, arranged in a sequence designed so that high and low, odd and even, red and black alternate as evenly as the layout allows. The zero is neither red nor black, neither odd nor even. It sits outside those either/or bets, and when it lands, the even-money wagers lose. That is not a malfunction. It is the mechanism that gives the house its edge.
The table layout mirrors the wheel. The main betting area shows the numbers in three columns of twelve, with a green zero at the head. Around that grid sit the outside bets: red, black, odd, even, low, high, dozens and columns. You do not need to memorise the wheel sequence to play, but you do need to know that the zero is the exception to every outside bet you can make.
From Cash to Chips
You buy in at the table, not at a cashier. Put your money on the felt rather than into the dealer's hand, and the dealer exchanges it for roulette chips. These are not the standard casino chips used at blackjack or craps. Each player at a roulette table receives a distinct colour so the dealer can tell whose bets are whose when they sit side by side on the same number. You cannot cash those coloured chips at the cage; you must exchange them back for standard chips at the table before you leave.
Every table posts its minimum and maximum bet. The minimum usually applies to each outside betting position and to the total of your inside bets, not to every chip you place. The maximum applies per bet type, and the table's posted limits are the only figures that matter. If you are unsure what the minimum covers, ask the dealer before the next spin, not after you have bet.
The Sequence of a Round
A round runs on a fixed rhythm, and understanding that rhythm prevents most of the confusion new players feel.
First, the dealer closes betting for the previous spin, often by announcing that no more bets may be placed. The ball is already moving. Once the ball drops into a pocket, the dealer marks the winning number on the layout with a marker, called a dolly. No one may touch bets while the dolly is down.
The dealer then clears all losing bets from the felt, moving from one section of the layout to the next. After that, winning bets are paid. Inside bets pay at the odds printed on the table's information panel or in the game rules; outside bets pay at even money or at the posted odds for dozens and columns. Only when every winning bet has been settled does the dealer lift the dolly, and only then may you place bets for the next spin.
The practical mistake most new players make is reaching for their winnings or trying to place a new bet while the dolly is still down. Wait for the dealer to lift it. The second mistake is leaving a winning bet on the felt and assuming the dealer knows whether you want it to ride or be returned. Say it clearly, or pick up the winnings yourself once the dolly is lifted.
Inside Bets: What You Are Choosing
Inside bets are wagers placed on the numbered grid itself. They pay more because they cover fewer numbers, and they lose more often for the same reason. The comparison below shows what each inside bet covers and how it is placed.
| Bet | Numbers covered | How it is placed | Payout |
|---|---|---|---|
| Straight up | 1 | Chip fully inside one number's box | 35 to 1 |
| Split | 2 | Chip on the line between two numbers | 17 to 1 |
| Street | 3 | Chip on the outer edge of a row of three | 11 to 1 |
| Corner | 4 | Chip on the intersection of four numbers | 8 to 1 |
| Six line | 6 | Chip on the edge covering two adjacent rows | 5 to 1 |
These payouts are fixed by the geometry of the wheel. A straight-up bet on any single number pays 35 to 1, but there are 37 pockets, so the payout is short by one unit relative to a fair game. That shortfall is the house edge, and it is the same for every inside bet on a European wheel.
Outside Bets and the Zero Problem
Outside bets sit around the numbered grid and cover larger groups of numbers. Red or black covers 18 numbers, odd or even covers 18, low covers 1 through 18 and high covers 19 through 36. A dozen covers 12 numbers, as does a column.
An even-money outside bet pays 1 to 1. You have 18 winning numbers and 19 losing numbers, because the zero loses on all of them. That single extra losing pocket is the entire house advantage on those bets. The dozens and columns pay 2 to 1 and cover 12 numbers, leaving 25 losing pockets. The edge is the same regardless of which outside bet you choose.
Some tables offer a rule under which half of an even-money outside bet is returned when the zero lands, sometimes called la partage, or a rule under which the bet is held for the next spin, sometimes called en prison. Whether either rule exists is printed in the table's own rules, and it changes the expected loss on even-money bets only. It does not change the wheel, and it does not change the inside bets.
What the House Edge Means in Practice
House edge and Return to Player are complements: for the same bet under the same rule set, they sum to 100%. On a European wheel, every bet faces the same edge because the zero is the only pocket that creates the shortfall. That is the structural difference from an American wheel, where the extra double-zero pocket increases the house edge on every bet.
Volatility is a separate matter. A straight-up bet on a single number has the same house edge as a bet on red, but its outcomes are far more spread out. You will lose the single-number bet far more often, and when it wins, it pays 35 to 1. The even-money bet wins close to half the time and pays even money. Neither choice changes the edge; they change the shape of your session.
No betting pattern alters that edge. Doubling a losing outside bet after each loss changes the size and timing of wins and losses, but it does not remove the zero from the wheel. The house edge is a property of the game, not of the sequence of wagers placed on it.
Reading the Table Before You Bet
The information you need is on the table itself. The layout shows the minimum and maximum. The information panel or the game rules screen states the payout odds and whether any zero rule applies. If the table uses an electronic display for recent numbers, treat it as a record of what has already happened, not as a prediction of what comes next. Each spin is independent.
Strategy charts do not exist for roulette in the way they do for blackjack, because roulette offers no decision after the bet is placed that changes the outcome. The only decisions are which bet to make, how much to wager, and when to stop. Those are bankroll decisions, not game decisions, and they are yours to make within the table limits.
FAQ
Does the zero lose on every outside bet?
Yes, unless the table's posted rules include a specific zero rule such as la partage, which returns half of certain even-money outside bets when the zero lands. Check the table's rule panel before you rely on it, because the rule applies only to the bets it names.
Is the house edge the same for every bet on a European wheel?
For the standard bets, yes. The zero creates the same shortfall whether you cover one number or eighteen. The difference between bets is volatility, not edge: a straight-up bet wins rarely and pays 35 to 1, while an even-money bet wins close to half the time and pays 1 to 1.
Why do players at the same table have different coloured chips?
Roulette chips are colour-coded per player so the dealer can identify whose bet sits on a shared number or line. They are valid only at that table and must be exchanged back for standard casino chips before you leave.
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This article is general information about how these mechanics work. It is not legal advice and not a recommendation to gamble or to use any particular operator. Availability and legality differ by jurisdiction — check the rules that apply where you are.