Roulette is a game of pure chance with a fixed house edge: 2.70% on a single-zero European wheel, 5.26% on an American double-zero wheel. That one fact shapes every useful tip in this guide. Below we cover where the game came from, why the zero exists, what popular strategies really do to your odds, and the practical habits that make roulette cheaper and more enjoyable. For the bet-by-bet payouts and a demo-play guide, see our free roulette hub.
Roulette history
The word roulette is French for “little wheel”. The game took shape in 18th-century France from older wheel and lottery games, including the Italian Biribi and the English wheel games Roly-Poly and E.O. A popular story credits the mathematician Blaise Pascal, who supposedly stumbled on the wheel while trying to build a perpetual motion machine in the 1600s. There is no evidence for it, and the game he would have known looked nothing like modern roulette.
By 1796 roulette was being played in the gaming houses of the Palais Royal in Paris, with a wheel carrying both a single and a double zero. The big change came in 1843. François and Louis Blanc opened a casino in Bad Homburg, in today’s Germany, with a single-zero wheel: a better deal for players, designed to win customers from rivals. François Blanc went on to run the casino at Monte Carlo for the Société des Bains de Mer, and the single-zero wheel became the European standard.
Roulette crossed the Atlantic with French settlers. American gambling halls kept the double zero, and some added extra pockets such as an eagle. Today single-zero wheels dominate in Europe and online, while American land casinos mostly use the double zero, and a few Las Vegas casinos even run triple-zero wheels.
Online roulette arrived with the first internet casinos in the mid-1990s as RNG software. Live dealer roulette followed in the 2000s, streaming real wheels from studios, and game-show variants such as Evolution’s Lightning Roulette (2018) added random multipliers.
Why the zero matters
Every roulette bet pays as if the wheel had only the numbers 1 to 36. A straight-up bet pays 35:1, which would be a fair price on a 36-number wheel. The zero adds a 37th pocket (and the double zero a 38th), so the true odds are worse than the payout. That gap is the house edge.
| Wheel | Pockets | House edge | Expected cost of EUR 100 staked |
|---|---|---|---|
| French (La Partage, even-money bets) | 37 | 1.35% | EUR 1.35 |
| European / French (other bets) | 37 | 2.70% | EUR 2.70 |
| American | 38 | 5.26% | EUR 5.26 |
| American five-number bet | 38 | 7.89% | EUR 7.89 |
| Triple zero | 39 | 7.69% | EUR 7.69 |
The edge is the same for every bet on a given wheel (except the special cases in the table), so there is no “smart” bet on the layout. Choosing the wheel is the biggest decision you make.
What is the best strategy to be aware of?
Most roulette strategies are betting systems: rules for changing your stake after wins or losses. They cannot change the odds of any spin, because each spin is independent. What they change is the pattern of results.
Martingale
Double your even-money bet after every loss, return to the base stake after a win. Each completed run wins one base unit. The catch is the streak: starting at EUR 5, seven losses in a row mean you have lost EUR 635 and the next bet is EUR 640, often above the table limit. Seven straight losses on red at a European wheel happen with a probability of about 0.94% per run, small for one run but likely over a long evening. The many small wins and the rare big loss average out to the same 2.70% cost as flat betting.
Reverse Martingale (Paroli)
Double after wins instead, and reset after a loss or after three wins. You lose small amounts often and occasionally catch a run. Same edge.
D’Alembert and Fibonacci
Gentler progressions: add one unit after a loss (D’Alembert) or follow the Fibonacci sequence. Swings are smaller than with Martingale, but a long losing run still builds large bets. Same edge.
Covering the table
Some players spread bets across most numbers to win more often. Winning more often is not winning more: the edge on each chip is unchanged, and the occasional zero or uncovered number costs the lot. Casinos also forbid this pattern while a bonus is active.
The only strategy that changes what roulette costs is choosing the game and controlling how much you stake per hour.
The main tips for you to consider while playing
- Always pick a single-zero wheel. If you like even-money bets, look for French roulette with La Partage or En Prison.
- Decide your budget before the first spin, and treat it as the price of the entertainment, not as an investment.
- Size your stake for the session. A base stake of 1% to 2% of your session budget lets you ride out normal swings.
- Mind the speed. RNG roulette can run several spins a minute; at the same stake that costs far more per hour than a live table at about one spin a minute.
- Ignore the history board. Hot and cold numbers are a record of the past. The next spin is always 1 in 37 for each number on a European wheel.
- Do not play roulette to clear a bonus. Contribution is usually low or zero, and bonus terms often ban low-risk betting patterns.
- Use the casino’s tools. Deposit limits, loss limits and time-outs work better than willpower at midnight.
- Try live roulette for atmosphere, not better odds. A live European wheel has the same 2.70% edge; our live dealer casino guide explains how the streams work.
Roulette variants you will meet online
Online lobbies mix classic wheels with newer formats. Knowing which is which saves money.
- European roulette (RNG): the reference game, 2.70% edge, usually with a demo mode.
- French roulette: the same wheel with La Partage or En Prison on even-money bets, which halves their edge to 1.35%. Check the rules panel, as some “French” tables online drop the rule.
- American roulette: double zero, 5.26% edge. Only worth playing if nothing else is available.
- Multi-wheel roulette: one bet placed on several wheels at once. Same edge per wheel, but your stake is multiplied by the number of wheels.
- Live and auto roulette: real wheels on camera; auto versions spin without a dealer and run faster.
- Multiplier roulette: games such as Lightning Roulette lower the straight-up payout (29:1) and add random multipliers. Expect much more variance on single numbers than at a standard table.
Whatever the format, read the payout table in the game’s info panel before you place a chip. Two games with the same wheel can pay differently.
Roulette etiquette at live tables
Live roulette has a chat window and a human dealer. Bets close when the countdown ends, so place them early. Keep chat polite; dealers cannot discuss results or give advice. Tips to the dealer, where offered, are optional. If a stream freezes, the round is settled by the result recorded at the wheel, and you can check it in your bet history.
Play responsibly
Roulette is for adults only: 18+ (higher in some countries). If gambling stops feeling like entertainment, free help is available from the National Gambling Helpline (GamCare) on 0808 8020 133 in England and Scotland or 0808 2819 265 in Wales, or Gambling Therapy internationally. More tools are on our responsible gambling page. For other games, see our casino tips for slots and table games and the blackjack guide, a table game where your decisions do change the odds.
Frequently asked questions
Who invented roulette?
No single inventor is documented. The game developed in 18th-century France from older wheel and lottery games. The popular story that Blaise Pascal invented it has no supporting evidence.
What is the best roulette strategy?
Play single-zero roulette, ideally a French table with La Partage for even-money bets (1.35% house edge), set a budget, and choose a stake that lets you play the session you planned. No betting system changes the house edge.
Does the Martingale system work in roulette?
It produces many small wins and occasional large losses. Over time the average result is the same as flat betting: a loss of 2.70% of everything you stake on a single-zero wheel.
Why is European roulette better than American?
European roulette has one zero and a 2.70% house edge. American roulette adds a double zero, which almost doubles the edge to 5.26%.
Can you predict where the ball will land?
Not in online RNG roulette, and not in practice in licensed live roulette, where wheels are maintained and checked for bias. Products sold as roulette predictors are scams.