Does Martingale Work in Roulette
Does the Martingale strategy work in roulette? It depends entirely on what 'work' means.
Martingale wins most short sessions and busts a few catastrophically. Long-term net result matches the house edge times total wagered, the same as any other strategy.
The mechanism
After every loss, you double the next bet. After every win, you reset. The idea is that one win recovers all prior losses plus the base bet.
It works as designed - until a losing streak exhausts the bankroll. See Martingale Roulette Strategy.
Why it wins most short sessions
A bet on red on European wins 48.65% of the time. The probability of a 6-loss streak in 100 spins is roughly 22%. So 78% of 100-spin Martingale sessions never hit the bust threshold and end profitable.
Those 78% are the 'works' sessions. The 22% are the 'doesn't work' sessions.
Why it doesn't work long-term
The bust costs erase the profits. Over 1,000 sessions of $10 Martingale on $1,000 bankroll: about 950 sessions end with a small profit, 50 bust. Average across all 1,000 sessions: a small loss matching the house edge.
The bust is not a fluke. It is part of the strategy's expected behaviour.
Table limit issue
Even with unlimited bankroll, table limits cap the doubling. A $10 base bet on a $5,000 max table can survive at most 9 doublings ($10 to $5,120). Hitting that limit ends the strategy.
The casino is not stupid. The table limit is set knowing the strategy and the math.
The honest answer
Martingale produces small frequent wins and rare catastrophic losses. Across enough sessions the net matches the house edge.
It is not a winning system. It is a variance-shaping system. It feels great when it works and crushing when it doesn't. Treat it as entertainment, never as a path to profit.
Test it yourself
Run Martingale 30 times in the tester at $10 base, $1,000 bankroll, 200 spins. Count busts. Average final bankroll. The numbers will land where they always land - close to the expected loss of 2.70% times total wagered.