Roulette Strategy Simulator — Test Any Betting System
Pick up to four betting systems and run them across thousands of simulated roulette sessions on identical spins. The only variable is the system — so the spread of outcomes you see is the system talking, not luck.
Roulette Strategy Lab
Pick up to four betting systems and pit them head-to-head across 1,000 simulated roulette sessions each — on identical spins, so the only difference is the system. The lab shows the honest spread of outcomes: risk of ruin, table-limit failures, and why every system pays the house exactly the same in the long run.
Build your own system
Press “Run the battle” to simulate 1,000 sessions per system.
The honest verdict
Bankroll over the session — median line per system
Head-to-head, 1,000 sessions per system
Why no staking system beats the wheel
Every roulette bet on the same wheel has the same expected cost: the house edge, taken from every pound you stake. A staking system only decides how that cost is delivered — Martingale converts it into many small winning nights and a rare catastrophic one; flat betting delivers it as a slow, steady bleed. The total, averaged over enough sessions, is identical.
The table limits are not a technicality — they are the wall every doubling system hits. With a £5 base bet and a £500 table maximum, Martingale can only survive seven consecutive losses before the table refuses the bet it needs; runs of eight or more losses on an even-money chance happen far more often than intuition suggests. The stats above track exactly how often the cap breaks each plan.
If you choose to play, the honest conclusions of this lab are: shorter sessions and smaller, flatter stakes expose less of your money to the edge; no progression recovers what the edge takes; and a bankroll should be money you have already decided you can lose. Decide your limit before you play, and stop when it is gone.
What the simulation actually shows
Every run pits your chosen systems against the same sequence of spins, so nothing separates them except how they stake. Because each system sits on the same 2.70% European house edge, none of them turns a profit over the long run — what changes is the shape of the ride. Aggressive negative progressions like the Martingale win small amounts often and then lose everything in one streak; flat betting bleeds slowly and predictably; positive progressions like the Paroli risk little but rarely recover a bad night.
The figures that matter are the risk of ruin (how often the bankroll hit zero), the table-limit failures (how often a doubling system ran into the ceiling before it could recover), and the distribution of final balances. Read those three together and the honest verdict writes itself: the systems that feel safest in a short session are usually the ones that end a long session worst.
How to read the results honestly
A system that finishes ahead across a batch of simulated sessions has not beaten the wheel — it got a good sample. Run it again and the edge reasserts itself. Use the simulator to compare how systems behave, not to hunt for a winner, because there isn't one. The value of a staking plan is bankroll discipline and session control, and that is exactly what the outcome spread lets you see and compare.
Common questions about the simulator
Does the simulator use real roulette odds?
Yes. Every spin is drawn on a single-zero European wheel with the true 2.70% house edge, so the outcomes reflect the same maths you face at a real table.
Can it prove a betting system wins?
No. Run enough sessions and every system converges on the same loss — a batch that finishes ahead is variance, not an edge. The simulator shows how a system behaves, not a way to beat the wheel.
How many sessions does each run cover?
Thousands per system, all on the same sequence of spins, so the only thing separating the systems is how they stake.
Is it free and private?
Completely. It runs in your browser, needs no sign-up, and nothing you enter ever leaves your device.