Roulette is the oldest casino game still on every South African casino floor, and arguably the most elegant. A wheel, a ball, a numbered grid. You bet on where the ball will land. Everything else is variation on that theme.
The whole house edge — every cent the casino expects to keep over the long run — comes from the green pockets: zero on the European wheel, zero and double-zero on the American. That single difference is the most important fact about roulette. We'll come back to it.
The two wheels, compared
Most South African casinos offer both versions. They look almost identical. They are not.
| European | American | |
|---|---|---|
| Pockets | 37 (0–36) | 38 (0–36 + 00) |
| House edge | 2.70% | 5.26% |
| Single number payout | 35:1 | 35:1 |
| Probability of single hit | 2.70% | 2.63% |
| Recommended? | Yes | Avoid |
The American wheel exists for one reason: to extract more money from players who don't know to ask for European. Always ask.
Inside bets: specific numbers
Inside bets are placed on the numbered grid. They pay larger but win less often. The expected value of every inside bet on a European wheel is identical — they all carry the same 2.7% edge. The difference is how often you'll win and how big the wins are.
| Bet | Covers | Payout | Win Probability |
|---|---|---|---|
| Straight Up | One number | 35:1 | 2.7% |
| Split | Two adjacent numbers | 17:1 | 5.4% |
| Street | Three numbers in a row | 11:1 | 8.1% |
| Corner | Four numbers (a square) | 8:1 | 10.8% |
| Six Line | Six numbers (two rows) | 5:1 | 16.2% |
Outside bets: the broad strokes
Outside bets cover larger groups of numbers — colour, parity, ranges of twelve, columns. They pay less but win much more often. For a player who wants the longest possible session, outside bets are the right choice.
| Bet | Covers | Payout | Win Probability |
|---|---|---|---|
| Red / Black | Colour | 1:1 | 48.65% |
| Odd / Even | Parity | 1:1 | 48.65% |
| High / Low | 1–18 or 19–36 | 1:1 | 48.65% |
| Dozen | 1–12, 13–24, or 25–36 | 2:1 | 32.4% |
| Column | One vertical column | 2:1 | 32.4% |
Betting systems: an honest assessment
Every betting system promised online claims to beat roulette. None of them do. The maths cannot be cheated — every spin is independent, and the house edge is constant. What systems can do is shape your variance, structure your play, and give you a stop-loss to follow. That has value, but not the value being sold.
Martingale: double after every loss
The most famous system. After every loss, you double your bet on an even-money outcome. After a win, you reset. The promise: a single win recoups all losses plus your base bet. The reality: a 7-loss streak on a R20 base requires a R2,560 next bet. Table limits and bankroll constraints destroy the system long before it gets a chance to work.
Fibonacci: 1, 1, 2, 3, 5, 8…
Bet sizes follow the Fibonacci sequence. After a loss, advance one step. After a win, retreat two steps. Slower-growing than Martingale, less catastrophic in losing streaks — but it shares the fundamental flaw. It cannot beat a negative-EV game.
D'Alembert: increase by one unit after a loss
Linear progression rather than geometric. You add one unit to your bet after a loss and remove one after a win. It's the most conservative of the popular systems. It still cannot beat the wheel — but it manages variance more gently than the others.
What we actually recommend
European roulette only. Even-money bets only (Red/Black, Odd/Even). Flat staking — same bet every spin. A session bankroll of 50× your unit bet, with a clear stop-loss and a profit target. This won't make you rich, but it gives you the longest possible session at the lowest possible cost — which is what you should actually want from roulette.
Sequencing your session
- Set your session bankroll. Decide what you can lose and not regret.
- Confirm the wheel is European before you sit down.
- Decide your stake. Two percent of bankroll per bet is a sensible default.
- Decide your stop-loss and profit target — and write them down if you have to.
- Bet flat on even-money outcomes. Or distribute across two or three outside bets if you want variety.
- When you hit either limit, leave. The wheel will be there tomorrow.
Continue learning
- Blackjack basic strategy — the lowest-edge game in the casino.
- Sports betting strategy for SA — value, odds, and EV.
- The full Strategy Hub — all guides, one library.