How to play
This is a single-zero wheel, 0 to 36, but two balls are launched on every spin instead of one. They always settle in two different pockets, so each spin gives you two winning numbers at once. The board itself is the familiar one; what changes is how a bet is paid.
You start with 1,000 virtual credits.
- Choose a chip: 10, 50, 100 or 500.
- Tap the board to place it. You can back any single number including 0, or the outside bets: red, black, odd, even, 1–18, 19–36, the three dozens and the three columns (the “2 to 1” boxes). The small rings on the lines between numbers take splits, streets, corners and six lines, and the racetrack row under the chips places Voisins, Tiers, Orphelins, Zero game and Neighbours. Those are split between the balls like any other bet.
- Each spot holds 10 to 1,000 credits in steps of 10, and all bets together can’t exceed 5,000.
- Undo, Clear and Rebet fix or repeat your layout. Press Spin.
After the spin the message shows both numbers, and the strip above the board lists recent pockets, two per spin.
How a bet is paid
There’s exactly one rule to learn: every bet is cut in half, and each half rides on one ball. Each half is then paid at ordinary European odds for its own ball, and the two results are added. That’s also why chips go up in tens: half of any bet is always a whole number.
Here’s what that does to a 20-credit bet:
| Bet | Both balls hit | One ball hits | Neither hits |
|---|---|---|---|
| Single number (incl. 0) | impossible | 360 back (17 to 1 overall) | 0 |
| Red, black, odd, even, 1–18, 19–36 | 40 back (1 to 1) | 20 back (stake returned) | 0 |
| Dozen or column | 60 back (2 to 1) | 30 back (half a win) | 0 |
A straight-up number can never be hit twice, since the balls can’t share a pocket. When one ball finds it, your half pays 35 to 1 and the other half is lost, which works out to 17 to 1 on the whole bet.
The odds with two balls
With two balls in different pockets there are 37 × 36 = 1,332 possible ordered outcomes, and every one is equally likely. Counting them gives the chances below.
| Bet | Both hit | Exactly one | Neither |
|---|---|---|---|
| Red (18 numbers) | 22.97% | 51.35% | 25.68% |
| A dozen (12 numbers) | 9.91% | 45.05% | 45.05% |
| A single number | 0% | 5.41% (2 in 37) | 94.59% |
So an even-money bet now has three outcomes instead of two, and the most common one is “nothing happens”: you get your stake back about half the time. A single number hits twice as often as on a normal wheel but pays half as much. Zero works the same way for every outside bet: a ball in 0 loses the half riding on it, and the other ball decides the other half.
Strategy
Splitting a bet doesn’t change what it’s worth. Each half is a normal single-zero bet, and on its own each ball is equally likely to land in any of the 37 pockets. The result: every bet on this table has a house edge of exactly 1 in 37, or 2.70%, the same as single-ball European Roulette. We checked this over all 1,332 outcomes, not by simulation.
What two balls change is the ride, not the price.
- Swings are smaller. Because results often cancel into a push, your balance moves more slowly per credit staked than with one ball. If you like long sessions on outside bets, this table suits that.
- Numbers become a steadier long shot. Instead of 1 in 37 at 35 to 1, you get 2 in 37 at 17 to 1. Same edge, half the drought length.
- Covering both colours is pointless. Red and black together come back as a stake return unless a ball hits 0, which only shaves credits.
- No pattern in the strip predicts anything. Each spin is a fresh pair of pockets.
If you want a worse edge with a bigger single-number thrill, compare Triple Zero Roulette, which adds two extra green pockets to a one-ball game.
If you enjoy Double Ball Roulette, try Double Bonus Poker or Double Double Bonus Poker next.
