The Wheel Is Not the Whole Story
Most of what makes French roulette different from the other roulette formats is not the wheel at all. The wheel is the familiar single-zero layout with 37 pockets, numbered 0 to 36. What changes the game is the printed table, the names of the outside bets, and one rule that only applies when the ball lands on zero.
You sit down, exchange cash for coloured chips, and place bets until the croupier calls an end to betting. The ball travels opposite to the wheel's spin, drops into a pocket, and the croupier settles every wager in a fixed order. If you have played any roulette variant, that rhythm is the same. The French table simply adds a layer of procedure and vocabulary on top of it.
The first thing to understand is that the wheel itself is the European single-zero wheel. It has 37 pockets and one zero. An American wheel has 38 pockets and a double zero, and that extra pocket is why the American layout carries a higher house edge on nearly every bet. French roulette is played on the European wheel, but the table rules push the edge on one specific category of bets lower still.
The Layout and the Language
The betting area is a long cloth with the numbers arranged in three columns of twelve, plus a zero at the head. Inside bets sit on or between the numbers. Outside bets sit in boxes around the edge of the number grid. On a French table, those outside boxes are often labelled in French, and the labels describe the bet rather than a colour.
The even-money wagers are the ones that matter most. A bet on red or black, odd or even, or low or high pays 1:1. On a French table these are sometimes called chances simples, or simple chances. The dozen and column bets pay 2:1 and cover twelve numbers each. The inside bets pay more because they cover fewer numbers: a straight-up bet on one number pays 35:1, a split on two numbers pays 17:1, a street on three pays 11:1, a corner on four pays 8:1, and a six-line on six numbers pays 5:1.
| Bet | Numbers covered | Payout | What changes on a French table |
|---|---|---|---|
| Straight up | 1 | 35:1 | Nothing; same as other single-zero tables |
| Split | 2 | 17:1 | Nothing |
| Street | 3 | 11:1 | Nothing |
| Corner | 4 | 8:1 | Nothing |
| Six line | 6 | 5:1 | Nothing |
| Dozen or column | 12 | 2:1 | Nothing |
| Even-money (red/black, odd/even, low/high) | 18 | 1:1 | La partage or en prison may apply when zero hits |
French tables also carry a set of announced or call bets, sometimes placed on a separate racetrack-shaped diagram printed beside the main grid. Voisins du zéro covers a block of numbers around the zero. Tiers du cylindre covers roughly a third of the wheel opposite the zero. Orphelins covers the numbers left over by those two groups. These are fixed combinations of straight, split and corner bets, and they cost a fixed number of units each. The croupier places them for you, and the table's printed minimums apply to the total combination rather than to each underlying bet.
La Partage and En Prison
The rule that defines French roulette applies only to even-money bets, and only when the ball lands on zero. Without a special rule, an even-money bet on zero loses outright, the same as any other losing spin. French roulette tables soften that loss in one of two ways.
Under la partage, the player loses only half the even-money stake and the house takes the other half. The bet is settled immediately; half the chips come back to the player. Under en prison, the losing even-money stake is not collected at all. It is held on the table, marked as imprisoned, and carried to the next spin. If the next spin wins, the full stake returns without any payout. If the next spin loses, the stake is collected. If the next spin is another zero, the imprisoned bet may stay for another round or lose half, depending on the table's stated rule.
Both rules reduce the house edge on even-money bets compared with a table that collects the full stake on a zero. La partage cuts the loss in half on one losing number out of 37. En prison produces a similar reduction but spreads it across the following spin. Neither rule changes the edge on inside bets, dozens, or columns, and neither changes the payout on a winning even-money bet. The difference is confined to what happens when zero appears.
Which rule a table uses is printed on the layout or stated on a placard at the table. The two are not interchangeable in their mechanics, even though their long-run effect on the even-money edge is close. If the rule matters to you, read the table before you buy in.
A Round from Buy-In to Settlement
You buy in by placing cash on the table, never directly into the croupier's hand. The croupier counts it, announces the amount, and gives you roulette chips. On a French table, each player often receives a distinct chip colour so that bets on the same number can be told apart. These chips have no value away from the table and must be exchanged for cash chips before you leave.
Betting stays open while the wheel spins and closes when the croupier announces it, usually with a phrase like rien ne va plus, meaning no more bets. Once the ball drops, the croupier marks the winning number, clears losing bets first, and then pays winners. Inside bets are paid before outside bets. On a la partage table, the zero settlement happens as part of the outside-bet pass.
The sequence matters because touching a bet after the call is a serious procedural error. A bet moved or added after betting closes is void, and repeated interference can get a player removed from the table. The same applies to touching chips that have already been settled. Wait for the croupier to finish the full sweep and payout before you reach for anything.
Where the Edge Sits
House edge and RTP are complements: for the same bet under the same rule set, they sum to 100%. On a single-zero wheel without la partage or en prison, the house edge on any even-money bet comes from the zero alone. The player covers 18 numbers and loses on 19, which produces the edge. The inside and outside bets all carry edges that follow from how many numbers they cover against how much they pay.
La partage and en prison change only the even-money calculation. When half an even-money stake is returned on a zero, the expected loss on that one number is halved, and the edge on the bet falls accordingly. The exact figure depends on whether the table uses la partage or en prison and, for en prison, on what happens after a second consecutive zero. The table's posted rule determines the arithmetic; the principle is that the edge on even-money bets is lower with either rule than without.
| Wheel and rule | What it means for the player | Which bets are affected |
|---|---|---|
| Single zero, no special rule | Zero collects even-money bets in full | All bets; edge comes from the zero pocket |
| Single zero, la partage | Zero returns half of even-money stakes | Even-money bets only |
| Single zero, en prison | Zero holds even-money stakes for the next spin | Even-money bets only |
| Double zero, no special rule | Two losing pockets for even-money bets | All bets; higher edge than single-zero layouts |
No betting pattern changes these edges. A progression that raises stakes after a loss redistributes when losses land; it does not remove the edge built into the wheel. The only choices under your control are which bets you place, how much you stake, how long you play, and when you stop.
Three Mistakes That Cost New Players
The first is treating the call bets as a single exotic wager without checking the unit cost. A voisins du zéro bet is a bundle of smaller bets, and the table minimum applies to the bundle. A player who thinks they are placing one minimum bet may be placing several, and the total stake is larger than the printed minimum suggests.
The second is assuming the special zero rule applies to every bet. It does not. A straight-up bet on zero pays as a winning number, but an even-money bet that loses to zero is the only wager that la partage or en prison touches. Dozens, columns and all inside bets lose in full when zero appears, whatever the table's even-money rule says.
The third is reaching for chips before settlement is complete. On a busy table, the croupier clears and pays in a strict order, and a hand in the layout during that pass is the fastest way to create a dispute. Let the croupier finish, watch the payout land, and only then collect.
FAQ
What is the difference between French and European roulette?
Both use the 37-pocket single-zero wheel. The difference is the table: French roulette uses French labels for the outside bets, offers the announced call bets on a racetrack layout, and applies la partage or en prison to even-money bets when zero hits. European roulette on the same wheel typically lacks those zero rules.
Does en prison give the player a second chance on any losing bet?
No. En prison applies only to even-money bets that lose to a zero. A losing inside bet, dozen, or column is collected in full. The imprisoned stake is also not a free bet: it returns the original stake on a win, with no payout, and is collected on a loss.
Are the announced call bets worth playing?
They are fixed combinations of the same straight, split and corner bets available on the main layout, grouped to cover sections of the wheel. Their house edges are the weighted edges of the underlying bets. They change coverage and unit cost, not the mathematics of the wheel.
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