"Just double the next bet after a loss and one win brings me back to even — isn't that a sure-win system?" See for yourself why that 'guaranteed' bet eventually wipes out your entire bankroll. You grind out small wins, but one long losing streak makes the bet balloon exponentially and drives your balance to zero.
The rules are simple. On European roulette (one zero, even-money win rate 18/37 ≈ 48.6%) you bet on an even-money option like red or black; after a loss you double the next bet, and after a win you reset to the first bet. The result is shown to you in live graphs.
Watch the slow climb and the sudden collapse in a real-time graph — the classic Martingale ending.
Rounds played, current/peak balance, next bet, wins/losses, and longest losing streak at a glance.
Freely set starting funds (1M/5M/10M), first bet (10k/50k/100k), and run speed.
Save results to SQLite and compare bust/survival records across different conditions.
Explains why Martingale eventually goes bust through house edge, exponential growth, and the gambler's fallacy.
No account, no collection of personal identifiers (excluding ad ID). Korean / English supported.
All amounts and bets in this app are virtual numbers for illustration and have nothing to do with real gambling or investing. Not a cent of real money is involved, there's no account feature, and no personal identifiers are collected (excluding the ad ID). This is an educational simulator built to expose the mathematical flaw of a "sure-win" system, and it does not encourage gambling.
Run the "sure-win" system and see its real ending. No sign-up, use it the moment you install.
📲 Get it on Google Play