@ZedClampet I tried the Martingale system in roulette where you double your bet after loss, but then it turned out I was colorblind
Pffff, it sounded fun when I typed it, even if it made no sense.
The Martingale strategy is a good way to get dinner money, but a bad way to get rich.
The main problems with the Martingale strategy are 1) table limits and 2) most people who play roulette don't have enough money on hand to even reach the table limit.
The table limit means you can only double your bet 10 times if you start with the minimum bet. Not including the casino take, if you have enough money on hand, you have a 50 percent chance of 10 losses in a row after 1024 games and a 99.9 percent after 3550 games. With the vigorish, it's substantially less.
That seems pretty good for a casino trip. You have a chance of going broke at any time, but the odds are in your favor to make dinner money and have some fun.
It's really slow playing the Martingale at the table minimum, though, so I made my own variant that says you don't double your bet when you lose, but bet double the total amount you've lost during the streak. In this case you would reach the table limit with 6 straight losses, which if you use binomial probability works out to 50 percent chance to reach the table maximum at 300 rounds and 99.9 percent at 1100 rounds.
So this is higher risk, but the rewards are more than triple the Martingale (as are the risks). Just running 10 sample games, Martingale won me $25 and my variant won me $85.
Personally, I'm not allowed to play roulette, so I never actually played my system except in a simulation. The only time I ever played in real life I had just left the poker room for the day and stopped by a roulette table on my way out. I made a bet, lost, made a bet, lost, decided I wanted to leave and just put the last $20 (can you tell I'm a high roller?) I had allotted for non-poker gaming on a random number in front of me. She spun the wheel, and I wasn't even paying attention because the odds were so low. Instead, I was watching a large group of people heading toward the cashier lines, and I wanted to get ahead of them. I realized the game was over and stood up to walk away when I saw the dealer push $700 in chips to me. I tipped the dealer $200 (if I remember correctly), cashed out and swore I wasn't ever playing roulette again.
All that was more than 30 years ago. I think the only reason I went to the roulette table to begin with was the long, slow line at the cashier's window. Impatience pays off
@Brian Boru