Roulette is the casino's most iconic game: a spinning wheel, a bouncing ball, and dozens of ways to bet. It is pure chance - no strategy changes the odds of where the ball lands - but the single most important decision you make is which wheel you sit at. Get that right and you cut the house edge nearly in half before you place a chip.
The wheels: American, European and French
The only meaningful difference between roulette variants is the number of zero pockets, and that difference drives the house edge.
- European wheel: 37 pockets (1-36 plus a single zero). House edge: 2.70%.
- American wheel: 38 pockets (1-36 plus zero and double-zero). House edge: 5.26%.
- French wheel: A European wheel with the "la partage" or "en prison" rule. On even-money bets, house edge drops to just 1.35%.
The lesson is simple: always choose a European or French wheel when available. The extra double-zero pocket on American roulette nearly doubles the house edge and gives you nothing in return. The la partage rule on French wheels returns half your even-money bet when the ball lands on zero, which is why it is the best roulette you can play.
Bet types and payouts
Bets split into two groups. Inside bets cover specific numbers and pay big; outside bets cover large groups and pay small. Importantly, every bet on a given wheel carries the same house edge - the payouts are scaled so that no bet is smarter than another in terms of expected value.
| Bet | Numbers covered | Payout | Win chance (European) |
|---|---|---|---|
| Straight up | 1 | 35:1 | 2.7% |
| Split | 2 | 17:1 | 5.4% |
| Street | 3 | 11:1 | 8.1% |
| Corner | 4 | 8:1 | 10.8% |
| Six line | 6 | 5:1 | 16.2% |
| Column / Dozen | 12 | 2:1 | 32.4% |
| Red/Black, Odd/Even, High/Low | 18 | 1:1 | 48.6% |
Notice the math: a straight-up bet pays 35:1 but the true odds against you are 36:1 on a European wheel. That one-unit gap is the house edge, and it applies identically whether you spread chips across the board or dump them on a single number.
Inside vs outside bets
Inside bets (straight, split, street, corner, six line) offer bigger payouts and higher volatility - you will lose more often but hit larger wins. Outside bets (red/black, odd/even, dozens, columns) win close to half the time and are far steadier on your bankroll. Neither is mathematically superior; the choice is about how much variance you want to ride.
Betting systems don't beat the wheel
You will hear about the Martingale (double after every loss), Fibonacci, D'Alembert and other progression systems. None of them changes the house edge. The Martingale can string together many small wins, but a short losing streak - which is statistically inevitable - hits the table limit or your bankroll and produces one catastrophic loss that erases everything. Because each spin is independent, the wheel has no memory: a color that has hit ten times in a row is exactly as likely to hit again as its opposite. The random number generator in online roulette guarantees this independence.
Playing roulette smart
- Always choose a European (2.70%) or French (1.35%) wheel over American (5.26%).
- On French wheels, prioritize even-money bets to benefit from la partage.
- Understand that no bet or system beats the built-in house edge.
- Set a session budget and treat roulette as entertainment, not income.
Roulette is one of the purest games of chance in the casino, which makes bankroll discipline everything - the house edge is unavoidable and grinds away with every spin. Pick the right wheel, bet within your means, and lean on our responsible gambling resources if play stops being fun. Live-dealer roulette, streamed from real studios, is covered in our live dealer guide.