The Wheel Is Only Half the Game
A first-time player usually walks up to a roulette table and looks at the spinning disc, assuming that is the game. It is not. The game is the pairing of that disc with a printed cloth called the layout, where every bet is placed. The wheel decides the number; the layout decides what a player can win or lose on it. Until you can read both, you are not really playing roulette yet.
The wheel itself has no special ceremonial name. It is simply called the roulette wheel, from the French word for "little wheel." What matters more than the name is which of the two standard wheel types is in front of you, because that single difference changes the arithmetic of every bet on the table.
The Two Wheel Types and Why the Difference Matters
Every roulette wheel is a shallow bowl with numbered pockets around its rim. A dealer spins the wheel in one direction and sends a small ball travelling the opposite way around a sloped track. The ball loses speed, drops onto the wheel, and settles in one pocket. The number in that pocket is the winning number.
The two layouts in common use are distinguished by how many green zero pockets they carry. A European wheel has 37 pockets: the numbers 1 through 36, plus a single zero. An American wheel has 38 pockets: the same 1 through 36, plus a single zero and a double zero. The extra pocket is not a cosmetic difference. It increases the house edge on the American layout because the zero pockets are where the house collects most of its advantage on the even-money outside bets.
| Feature | European wheel | American wheel |
|---|---|---|
| Pockets | 37 | 38 |
| Zero pockets | Single zero only | Single zero and double zero |
| Number range | 0-36 | 0-36 plus 00 |
| Effect on house edge | Lower edge on equivalent bets | Higher edge on equivalent bets |
| Common locations | Widespread outside North America | Common in North America and some cruise-ship casinos |
When you sit down, look at the wheel before you buy in. If you see two green pockets, you are on an American layout and every bet you make carries a larger built-in disadvantage than the same bet would on a single-zero wheel.
The Parts of the Wheel You Will Use
The wheel has a few named parts, and knowing them saves confusion when a dealer or another player uses the terms.
- The bowl is the stationary outer housing that holds the whole mechanism.
- The wheelhead is the rotating inner part that contains the numbered pockets.
- The ball track is the sloped ring around the top of the bowl where the ball travels before dropping.
- The pockets are the numbered compartments that catch the ball.
- The layout is the printed betting cloth beside the wheel, not part of the wheel itself.
None of these names affects how you play. The one term that does affect your money is the zero, because it is the pocket that turns a near-even proposition into a losing one over time.
From Buy-In to Settlement: One Round Step by Step
Roulette is a slow, social game compared with most electronic games, and the sequence of a round is fixed. Understanding that sequence is what lets you sit down and play without fumbling.
First, you buy in. You place cash on the layout, and the dealer exchanges it for roulette chips. These chips are not the standard value chips used at other tables; they are colour chips assigned to you alone at that table, and they have no value away from it. Tell the dealer what value you want each chip to represent, or let the dealer assign a standard value. The dealer places a marker button on the rim of the wheel showing your chip colour and its value.
Second, the dealer opens betting. You place chips directly on the layout. You may bet on a single number, on groups of numbers, on red or black, odd or even, high or low, or on combinations of these. Betting stays open while the wheel spins and typically closes only when the dealer calls "no more bets" as the ball begins to drop.
Third, the ball settles. The dealer marks the winning number on the layout with a marker, clears all losing bets from the cloth, and then pays winning bets. Outside bets pay even money or 2 to 1; inside bets pay more, up to 35 to 1 for a straight-up single number. The exact payout for each bet is printed on the layout or stated in the table rules.
Fourth, settlement. Your winning chips stay on the table until the dealer has paid them. Only after the marker is lifted and the next round's betting opens do you collect your winnings or leave them up for the next spin. Never reach onto the layout while the dealer is paying; that is the fastest way to have a hand waved off and a bet misread.
What Each Bet Type Means
Every roulette bet is a wager on where the ball will land, expressed as a group of numbers. The groups are not all equal, and the house edge is not identical across every bet on an American wheel. The main division is between inside bets, placed on the numbered grid, and outside bets, placed around its edges.
| Bet | What it covers | Typical payout | Where it sits on the layout |
|---|---|---|---|
| Straight-up | One single number | 35 to 1 | Inside |
| Split | Two adjacent numbers | 17 to 1 | Inside |
| Street | Three numbers in a row | 11 to 1 | Inside |
| Corner | Four numbers meeting at a corner | 8 to 1 | Inside |
| Six line | Six numbers across two rows | 5 to 1 | Inside |
| Red or black | All numbers of one colour | 1 to 1 | Outside |
| Odd or even | All odd or all even numbers | 1 to 1 | Outside |
| High or low | 1-18 or 19-36 | 1 to 1 | Outside |
| Dozen | Twelve consecutive numbers | 2 to 1 | Outside |
| Column | Twelve numbers in a vertical column | 2 to 1 | Outside |
The payouts above are the standard printed values, but the edge behind them differs with the wheel type. On a single-zero wheel, a straight-up bet pays 35 to 1 when a fair payout on 37 pockets would be 36 to 1. On a double-zero wheel, the same bet pays 35 to 1 against 38 pockets. The shortfall is the house edge, and it is larger on the American layout for every bet on the cloth.
The Bet That Feels Safe and Is Not
New players gravitate to red or black because it feels like a coin flip. It is close to one, but the zero pockets break the symmetry. On a European wheel, the ball can land on 18 red numbers, 18 black numbers, and one green zero. A bet on red loses on 19 of 37 pockets. On an American wheel, it loses on 20 of 38. The payout is even money either way, so the player is accepting a worse than even chance at an even-money price.
That does not make outside bets a mistake. They produce smaller swings than inside bets and keep a player at the table longer for the same buy-in. But they are not neutral, and no bet on the wheel is. The edge is built into the payout schedule, not into how you choose to arrange your chips.
What a Strategy Chart Cannot Do Here
Unlike blackjack, where published basic-strategy charts derive from the exact rule set in use, roulette has no decision chart that changes the built-in edge. Every bet on the layout has its edge fixed by the wheel type and the payout schedule. A player can choose bets with smaller edges, can choose how much to stake, and can decide when to stop, but no arrangement of bets across the cloth removes the house advantage.
If you see a roulette system for sale that promises otherwise, read it as a staking plan, not a strategy. Doubling after losses and similar progressions change the shape of your results, not the expected rate of loss. The wheel does not know what you bet last spin.
Three Procedural Mistakes That Cost New Players
The first is buying in with the wrong chip value. If you hand over cash and let the dealer assign a value without checking, you may end up with chips worth more per unit than you intended, and your first bet is larger than you planned. State the value you want when you buy in.
The second is touching a bet after the call. Once the dealer calls "no more bets," the layout is frozen. Reaching in to move or add a chip, even accidentally, can get a bet voided or a warning. Keep your hands off the cloth from the call until the dealer finishes paying.
The third is leaving the table with colour chips in your pocket. Roulette chips have no value at the cage or at any other table. Before you stand up, ask the dealer to colour you up, meaning exchange your colour chips for standard value chips. Do this at the table, not at the cashier.
FAQ
Is there a special name for the spinning part of a roulette wheel?
The rotating inner section that holds the numbered pockets is called the wheelhead. The stationary outer housing is the bowl, and the sloped ring the ball travels around is the ball track. In ordinary conversation, most players just say "the wheel."
Why does the American wheel have an extra zero?
The double zero was added to the American layout as a second house pocket. Its effect is to increase the house edge on every bet compared with a single-zero wheel, because the payout schedule stays the same while the number of losing pockets grows by one.
Can I use the same chips at a different roulette table?
No. The coloured chips issued at a roulette table are assigned to you at that table only and carry no value anywhere else. When you finish playing, ask the dealer to exchange them for standard casino chips before you leave the table.
Gambling involves risk. Please only gamble with funds you can comfortably afford to lose. While we do our best to provide accurate information, we cannot guarantee the accuracy of all content. Gambling should be approached as a form of entertainment, not a way to make money. Do not chase losses. If you or someone you know is struggling with gambling, help is available through responsible gambling resources.
Play responsibly
Gambling should be treated as paid entertainment, never as a way to earn income or recover losses. 1-800-MY-RESET (1-800-697-3738)
18+ or 21+ depending on where you are; follow the minimum age that applies to you.
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.