Martingale

Also known as Double or Nothing. A betting system in which a player makes the same bet after each win and doubles their bet after each loss.  Say, if you wagered $5 and won, you bet $5 again. In case you lost, you bet $10 next time. If you lose again, your next bet will be $20. If you win, you bet the initial $5. Some players believe that Martingale system works on the short run. However, statistics prove it wrong.

Many casino games have betting limits that do not allow the players to endlessly double their bets. So the player either meets the table limit or the cash limit and loses it all.

Examples:

Have you ever played American Roulette by Martingale system?

I will never use Martingale for Blackjack again.