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Spread-Bet Roulette
Introduction
Spread-Bet is a set of side bets in roulette by Cammegh, a maker of gaming equipment, including roulette tables and signs. The outcome is based on the sum of two electronic spins, as shown to the player on the electronic game display.
Rules
Spread-Bet is a set of seven side bets that can be added to a standard roulette game. Following are the rules.
- In addition to the standard roulette spin, two random outcomes will be drawn electronically and displayed to the player virtually on the scoreboard in the form of two concentric roulette wheels.
- The two virtual spins will be on the same kind of roulette wheel as the physical spin. In other words, the same number of zeroes will be used.
- There are seven bets to choose from, which will win according to the sum of the two virtual spins. These betting spaces will be placed in the area for outside bets.
- The win of the Spread-Bets shall be based on the sum of the two virtual spins. Both the zero and double-zero shall count as zero for purposes of this sum.
- The seven different Spread-Bets cover various ranges from 0 to 72. Different versions are available to the casino operator, which are shown in the analysis section of this page.
Single-Zero Wheel Analysis
The following four tables show the four sets of bets available to casino operators for single-zero wheels. Each table shows the seven bets available, what a win pays (on a "to one" basis), the number of winning combinations, probability of winning, and expected return to the player.
Single-Zero Wheel — Pay Table 1
| Bet Match |
Pays | Combinations | Probability | Return |
|---|---|---|---|---|
| 0 | 1200 | 1 | 0.000730 | -0.122717 |
| 1 to 11 | 15 | 77 | 0.056245 | -0.100073 |
| 12 to 18 | 10 | 112 | 0.081812 | -0.100073 |
| 19 to 39 | 1 | 618 | 0.451424 | -0.097151 |
| 40 to 50 | 3 | 308 | 0.224982 | -0.100073 |
| 51 to 70 | 4 | 250 | 0.182615 | -0.086925 |
| 71 to 72 | 400 | 3 | 0.002191 | -0.121256 |
Single-Zero Wheel — Pay Table 2
| Bet Match |
Pays | Combinations | Probability | Return |
|---|---|---|---|---|
| 0 to 4 | 80 | 15 | 0.010957 | -0.112491 |
| 5 to 18 | 6 | 175 | 0.127831 | -0.105186 |
| 19 to 30 | 3 | 306 | 0.223521 | -0.105917 |
| 31 to 39 | 3 | 312 | 0.227904 | -0.088386 |
| 40 to 50 | 3 | 308 | 0.224982 | -0.100073 |
| 51 to 69 | 4 | 247 | 0.180424 | -0.097882 |
| 70 to 72 | 200 | 6 | 0.004383 | -0.119065 |
Single-Zero Wheel — Pay Table 3
| Bet Match |
Pays | Combinations | Probability | Return |
|---|---|---|---|---|
| 0 or 1 | 400 | 3 | 0.002191 | -0.121256 |
| 2 to 11 | 15 | 75 | 0.054785 | -0.123448 |
| 12 to 18 | 10 | 112 | 0.081812 | -0.100073 |
| 19 to 33 | 2 | 405 | 0.295836 | -0.112491 |
| 34 to 54 | 1 | 603 | 0.440467 | -0.119065 |
| 55 to 67 | 7 | 156 | 0.113952 | -0.088386 |
| 68 or 72 | 80 | 15 | 0.010957 | -0.112491 |
Single-Zero Wheel — Pay Table 4
| Bet Match |
Pays | Combinations | Probability | Return |
|---|---|---|---|---|
| 0 to 2 | 200 | 6 | 0.004383 | -0.119065 |
| 3 to 7 | 40 | 30 | 0.021914 | -0.101534 |
| 8 | 135 | 9 | 0.006574 | -0.105917 |
| 9 to 25 | 3 | 306 | 0.223521 | -0.105917 |
| 26 to 44 | 1 | 612 | 0.447042 | -0.105917 |
| 45 to 70 | 2 | 403 | 0.294375 | -0.116874 |
| 71 or 72 | 400 | 3 | 0.002191 | -0.121256 |
Double-Zero Wheel Analysis
The following five tables show the four sets of bets available to casino operators for double-zero wheels. Each table shows the seven bets available, what a win pays (on a "to one" basis), the number of winning combinations, probability of winning, and expected return to the player.
Double-Zero Wheel — Pay Table 1
| Bet Match |
Pays | Combinations | Probability | Return |
|---|---|---|---|---|
| 0 | 320 | 4 | 0.002770 | -0.110803 |
| 1 to 11 | 12 | 99 | 0.068560 | -0.108726 |
| 12 to 18 | 9 | 126 | 0.087258 | -0.127424 |
| 19 to 39 | 1 | 654 | 0.452909 | -0.094183 |
| 40 to 50 | 2 | 308 | 0.213296 | -0.360111 |
| 51 to 71 | 10 | 252 | 0.174515 | 0.919668 |
| 72 | 1275 | 1 | 0.000693 | -0.116343 |
Double-Zero Wheel — Pay Table 2
| Bet Match |
Pays | Combinations | Probability | Return |
|---|---|---|---|---|
| 0 to 1 | 150 | 8 | 0.005540 | -0.163435 |
| 2 to 9 | 18 | 68 | 0.047091 | -0.105263 |
| 10 to 25 | 3 | 328 | 0.227147 | -0.091413 |
| 26 to 45 | 1 | 662 | 0.458449 | -0.083102 |
| 46 to 57 | 4 | 258 | 0.178670 | -0.106648 |
| 58 to 70 | 10 | 117 | 0.081025 | -0.108726 |
| 71 or 72 | 400 | 3 | 0.002078 | -0.166898 |
Double-Zero Wheel — Pay Table 3
| Bet Match |
Pays | Combinations | Probability | Return |
|---|---|---|---|---|
| 0 or 1 | 150 | 8 | 0.005540 | -0.163435 |
| 2 to 9 | 18 | 68 | 0.047091 | -0.105263 |
| 10 to 25 | 3 | 328 | 0.227147 | -0.091413 |
| 26 to 45 | 1 | 662 | 0.458449 | -0.083102 |
| 46 to 57 | 4 | 258 | 0.178670 | -0.106648 |
| 58 to 71 | 10 | 119 | 0.082410 | -0.093490 |
| 72 | 1250 | 1 | 0.000693 | -0.133657 |
Double-Zero Wheel — Pay Table 4
| Bet Match |
Pays | Combinations | Probability | Return |
|---|---|---|---|---|
| 0 or 1 | 160 | 8 | 0.005540 | -0.108033 |
| 2 to 9 | 18 | 68 | 0.047091 | -0.105263 |
| 10 to 25 | 3 | 328 | 0.227147 | -0.091413 |
| 26 to 45 | 1 | 662 | 0.458449 | -0.083102 |
| 46 to 57 | 4 | 258 | 0.178670 | -0.106648 |
| 58 to 70 | 10 | 117 | 0.081025 | -0.108726 |
| 71 or 72 | 430 | 3 | 0.002078 | -0.104571 |
Double-Zero Wheel — Pay Table 5
| Bet Match |
Pays | Combinations | Probability | Return |
|---|---|---|---|---|
| 0 to 2 | 100 | 13 | 0.009003 | -0.090720 |
| 3 to 20 | 4 | 261 | 0.180748 | -0.096260 |
| 21 to 40 | 1 | 642 | 0.444598 | -0.110803 |
| 41 to 58 | 2 | 423 | 0.292936 | -0.121191 |
| 59 to 65 | 16 | 77 | 0.053324 | -0.093490 |
| 66 to 70 | 50 | 25 | 0.017313 | -0.117036 |
| 71 or 72 | 430 | 3 | 0.002078 | -0.104571 |
External Links
- Cammegh — Game description from the game distributor.
- Official rules — As played in the UK.