Roulette Strategy Simulator
Betting systems do not change the house edge — they change the shape of the outcome. This simulator runs thousands of even-money sessions and reports how often each system empties the bankroll, which is the number the anecdotes leave out.
Chance of losing the bankroll
All seven systems, same conditions
| System | Ruin rate | Avg final bankroll | Avg net | Avg spins | Avg turnover | Worst seen |
|---|
Set the system dropdown to "Compare all seven" to populate every row. Simulations use even-money bets on the selected wheel, including la partage where the wheel offers it.
Read the two columns together
The interesting result is not the average — it is that the average barely moves as a percentage of turnover while the ruin rate swings enormously. Flat betting rarely empties a bankroll in 200 spins. Martingale does it often, and when it does not, it shows a small profit. That is the trade: many small wins purchased with one rare, total loss.
Read the turnover column next to the ruin column. It is the one most write-ups leave out, and it explains everything else. Progression systems stake far more than flat betting over the same number of spins, and since the edge is charged per unit staked, they lose proportionally more in absolute money. The percentage never changes; the base it applies to does.
That is also why D'Alembert — routinely described as the safe alternative to Martingale — does not come out ahead here. Because it steps down one unit on a win instead of resetting to base, its stake ratchets upward and stays high, so it typically stakes around 1.8 times Martingale's turnover over the same session and empties the bankroll about as often. Gentler per bet is not the same as safer.
Why the table maximum matters
Martingale only works in a world with an infinite bankroll and no table limit. Set the table maximum to 1,000 with a 10-unit base and the system dies after seven consecutive losses — an event that happens roughly once every 90 sequences on an even-money bet. Lower the maximum and watch the ruin rate climb; that limit is not there by accident.
What the simulator cannot tell you
It models the maths, not the psychology. Real sessions end because someone gets bored, angry, or decides that this one time they will double once more. Those decisions do far more damage than the house edge, and no simulation captures them.
GETRAKEBACK. 18+.
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18+. Roulette has a fixed house edge, so over enough spins the maths favours the operator — always. If you play for real, treat it as money spent on entertainment, set a limit before you start and stop when you reach it. Our responsible gambling page covers the warning signs and where to get free, confidential help.