Martingale Simulator
Does doubling your bet after every loss actually work? Run a simulation and see for yourself. Spoiler: the math is not on your side.
Simulation Setup
Why Betting Systems Always Fail
The Martingale system is the most famous betting strategy in gambling, and it is also the most dangerous. The idea sounds foolproof: double your bet after every loss, and when you eventually win, you recover everything plus one unit of profit. In practice, the system works exactly as advertised for stretches of time. Players will enjoy a steady drip of small wins for dozens or even hundreds of rounds. The problem is not the typical round; it is the inevitable losing streak that turns the entire approach upside down.
Consider a $10 base bet with a $1,000 bankroll. After just seven consecutive losses, your next required bet would be $1,280, which exceeds your entire bankroll. Seven losses in a row on a European roulette even-money bet has a probability of roughly 1.5%, which means it happens roughly once every 67 sequences. If you play long enough, you will hit that streak, and when you do, you will lose everything you accumulated and more. The system does not eliminate the house edge; it simply concentrates your losses into rare but devastating events.
Fibonacci and D'Alembert systems escalate more slowly than Martingale, but they share the same fundamental flaw: no sequence of bet sizing adjustments can change the expected value of a negative-expectation game. The house edge applies to every single bet independently, regardless of what happened on the previous spin. Flat betting at a consistent, bankroll-appropriate size will not make you a long-term winner either, but it gives you the most predictable and sustainable experience for your money.
Frequently Asked Questions
Does the Martingale system work?
No. The Martingale system produces small, frequent wins but eventually hits a losing streak long enough to wipe out all previous gains and more. Table limits, finite bankrolls, and the house edge guarantee that no betting system can overcome the mathematics of casino games over time.
Why do betting systems fail?
All betting systems fail because they cannot change the house edge. Each bet has the same negative expected value regardless of what happened on previous bets. Systems like Martingale simply redistribute when you win and lose, trading many small wins for rare but catastrophic losses.
What is the safest betting strategy?
The safest approach is flat betting: wagering the same amount on every round. This keeps your variance predictable and ensures no single losing streak can destroy your bankroll. Combine flat betting with games that have a low house edge for the best results.