Roulette myths and the real maths

Why roulette myths are so persistent

Roulette is fast, visual and full of near misses, which is perfect soil for myths. Players see a streak, remember a lucky session or hear a story about a system that "always works", and the explanation sticks. The truth is less exciting but easy to check: a single-zero wheel has 37 pockets, every standard bet pays as if there were 36, and that gap of one pocket sets the cost.

Wizard of Odds' roulette basics (opens in a new tab) puts the result at 2.70% on every bet on a single-zero wheel and 5.26% on double zero (except the five-number bet at 7.89%). Keep those three figures in mind and most roulette myths answer themselves.

Myths 1 and 2: systems and "due" numbers

Myth 1: a betting system can beat roulette

Martingale, Fibonacci, d'Alembert and the rest only decide how much you put down next. Since every bet has the same negative expected value, any total of bets has it too. Wikipedia's roulette article reaches the same conclusion: no betting strategy can statistically overcome the casino's advantage, because each allowed bet has a negative expected value. Doubling after losses mostly produces small wins punctuated by rare, very large losses. The full workings, with streak probabilities, are on our roulette betting systems page.

Myth 2: a number that hasn't landed is due

The wheel has no memory, so 23 has a 1 in 37 chance on the next spin whether it last appeared ten spins ago or two hundred. Believing otherwise is the gambler's fallacy. Gaps and clusters are a normal feature of random results; our guide to hot and cold numbers shows how many numbers you should expect to go missing in a fair run.

Myth 3: online roulette is rigged

For games offered to players in Great Britain, the Gambling Commission's RTS 7 standard (opens in a new tab) requires random number generation and game results to be acceptably random, and it bans compensated games that adjust outcomes to make up for earlier results. Its guidance also says it should be computationally infeasible to predict the next number, and that a simulated wheel's probabilities should match those of a real one.

So a UK-licensed RNG European wheel gives each number a 1 in 37 chance, the same as a physical wheel. The house doesn't need to rig anything: the edge is built into the payouts. Live games add a real wheel streamed from a studio, and the Commission's guidance says players shouldn't be able to touch mechanical devices. See is online roulette random and our comparison of RNG and live roulette.

Protection applies to UKGC-licensed sites. Unlicensed offshore sites aren't covered by these standards, so you lose those safeguards if you play there.

Myth 4: covering most of the table is a winning roulette strategy

Spreading chips across many numbers does raise the chance that something wins, and it feels safe. But a win that covers fewer chips than you staked is a loss, and each component bet still carries the 2.70% edge. Here is a £20 example on single zero, using standard payouts.

Two dozens win almost two spins in three, but each win adds £10 and each loss takes £20. The arithmetic is (24 × £10 − 13 × £20) ÷ 37, or about −54p a spin, exactly the same as betting the whole £20 on a single number. Coverage changes how often you win and by how much, never the average. Our pages on the dozen bet and column bet show the payouts.

Myths 5 to 7: inside bets, zero and wheel types

Myth 5: inside bets cost more than outside bets

On a single-zero wheel, a straight-up bet, a split, a corner and red or black all carry the same 2.70% edge. Inside bets are more volatile, because they win less often and pay more, but they aren't more expensive on average. The one exception is American roulette's five-number top line, at 7.89%.

Myth 6: you can't bet on zero

Zero is green and wins for the house on outside bets, which is why it has a reputation as "the casino's number". You can still back it straight up at 35 to 1, or in splits and other combinations, with the same 2.70% edge as any other number. Our question page on whether you can bet on zero shows the options.

Myth 7: American and European roulette are basically the same

The layout looks similar, but the extra double-zero pocket nearly doubles the cost. Wizard of Odds' summary of the variants (opens in a new tab) gives about 2.7% for European and 5.26% for American. On £5 a spin over 200 spins (£1,000 staked), that is about £27 on average against £52.60. Compare them on our European roulette and American roulette pages.

Myths 8 and 9: La Partage and Lightning Roulette odds

Myth 8: La Partage improves every bet

On a French table with La Partage, you get half your stake back when zero lands, but only on even-money bets such as red/black, odd/even and high/low. That cuts their edge to about 1.35%. Straight-ups, splits, dozens and columns are untouched at 2.70%. If you mix bets, only the even-money part gets cheaper.

Myth 9: Lightning Roulette has better odds

Evolution's Lightning Roulette (opens in a new tab) strikes one to five Lucky Numbers each round with multipliers from 50x to 500x, but unmultiplied straight-up wins pay 29 to 1 instead of 35 to 1. The lower base payout funds the multipliers. Operator game pages list the RTP as 97.10% to 97.30%, so at best it matches standard European roulette's 97.30% return and can be slightly lower. Other bets, such as red/black and dozens, pay the standard amounts. Read more in our Lightning Roulette guide.

Myths 10 and 11: stakes and the house edge in a session

Myth 10: high-stakes tables pay better

Payouts are fixed by the bet type, not the stake. A split pays 17 to 1 at a 10p table and at a VIP table alike, so the edge is the same percentage. Bigger stakes simply mean a bigger pound cost: 2.70% of £100 is £2.70 a spin on average. The difference between tables is the limits; see choosing table limits.

Myth 11: you lose exactly 2.70% every session

The house edge is a long-run average, not a fee taken from each session. Take 100 spins of £5 on red at single zero: £500 staked and an expected loss of £13.50. But each even-money bet has a standard deviation of almost exactly one stake, so over 100 spins the spread is about £50 either side of that average (the square root of 100, times £5). Plenty of sessions end ahead and plenty end well behind. Over thousands of spins, results drift toward the average, which is the law of large numbers at work. Our variance guide explains the measure.

Myth 12: the devil's wheel

The numbers 0 to 36 add up to 666 (36 × 37 ÷ 2), and a Monte Carlo legend claims François Blanc bargained with the devil for roulette's secrets. It is a fun piece of folklore, covered on our history of roulette page, but the total has no effect on outcomes. What actually matters about the numbers is how they are arranged: the wheel is balanced so red and black alternate and sections average out, as the roulette wheel numbers page shows.

How to test any roulette myth yourself

You don't need to trust anyone's word, including ours. Any roulette claim can be checked with a few lines of arithmetic.

1. Count the pockets: 37 on single zero, 38 on double zero.
2. Count how many pockets your bet covers and note its payout (35 to 1, 17 to 1, 2 to 1, 1 to 1 and so on).
3. Work out the average: (pockets that win × payout − pockets that lose) ÷ total pockets, per unit staked.
4. Check for special rules such as La Partage or reduced base payouts in the game's help screen.
5. Ask whether the claim changes any of those numbers; if not, it can't change the edge.

UK rules that protect roulette players from myths

Several UK rules help keep play grounded. Since 17 January 2025, autoplay has been banned for all online casino games, including live casino, non-slot games must allow at least 5 seconds per game cycle, and net spend and time spent must be shown in real time. Before your first deposit you'll be prompted to set a financial limit, and age and identity must be verified before you can play.

Those tools work best when you treat roulette as paid entertainment rather than a puzzle to solve. If you notice yourself hunting for a system or chasing a cold number, the safer gambling hub has practical options, from reality checks to free support.

Where roulette fits with our partner offers

Our partner offers are aimed at slots, so they won't help with a roulette myth or a roulette session. Casumo's 50% first-deposit bonus up to £100 (minimum £20, 10x wagering within 7 days, £5 maximum bet, game restrictions) often excludes table games or counts them for less. 10bet's 100% match up to £25 has to be wagered 10x on slots within 3 days, with £1,000 maximum bonus winnings and Skrill and Neteller excluded. Coral gives 100 free spins at 10p on selected slots when you bet £10 on slots, with 48 hours to accept, 7 days to use them and no wagering on winnings.

For roulette, look in each casino's table and live lobbies and check the game rules. 18+ and terms apply.

18+. Every casino game has a built-in house edge, so over time you should expect to lose what you stake. Set a budget before you play and stop when it’s gone: safer gambling tools and support. Free, confidential help: National Gambling Helpline 0808 8020 133.