Both Martingale and Fibonacci are negative progressions: they raise the stake after a loss. The difference is entirely in how fast the stakes climb, which changes the drawdown shape but not the long-run result.
Quick Comparison Table
| Feature | Martingale | Fibonacci |
|---|---|---|
| Rule after loss | Double | Next number in sequence |
| Growth speed | Fast (exponential) | Slower |
| Recovery per win | Full plus one unit | Partial (back two steps) |
| Variance | Higher | Lower |
| House edge | Unchanged | Unchanged |
How Martingale Works
Martingale doubles after every loss and resets after a win, so a single win recovers the entire sequence plus one base unit. It is the fastest-recovering system, explained in full in the Martingale strategy guide.
How Fibonacci Works
Fibonacci moves one step forward along the sequence 1, 1, 2, 3, 5, 8, 13 after each loss and two steps back after each win. Recovery is gradual: a win claws back the last couple of losses rather than the whole run at once.
Progression Speed
The stakes tell the story. After six losses at one unit, Martingale requires 32 units on the next bet while Fibonacci requires only 13. The gentler climb is why Fibonacci feels calmer, though it also recovers losses more slowly.
Bankroll Pressure
Because Fibonacci grows more slowly, it consumes bankroll less aggressively during a losing streak. The same streak that breaks a Martingale bankroll may still be survivable under Fibonacci, though at the cost of an incomplete recovery.
Table-Limit Pressure
Slower growth also means Fibonacci reaches the table maximum in more steps than Martingale, giving the progression a little more room before it is blocked. The gap widens the deeper a streak runs.
Risk of Ruin
Both systems carry a real risk of ruin. Fibonacci lowers the size of the worst-case bet but does not eliminate the possibility of a streak that outruns your limits or your recovery.
Expected Value Reminder
Neither system changes the odds of a spin. Every bet in both progressions carries the same house edge, so the long-run expected value is negative for both. The choice between them is a choice of variance, not of edge. This comparison sits within the wider set of roulette systems.