The Martingale Betting System is one of the most popular and oldest betting systems and is also in my opinion the biggest failure.  The Martingale Betting System doubles up on losing bets which can see you lose your bankroll within a matter of minutes.  Usually the Martingale Betting System is a system that is only used on even money bets as you are trying to win back everything you have lost up until that point.

If we look at Roulette for example and betting on Red/Black which are even money chances your first bet could be $1.  If you win you make a profit of $1, but if you lose you now have to try and make that $1 back plus your next bet which means you now have to bet $2, if that bet loses your next is $4 and you keep doubling your money until eventually you either run out of money or win.  You may win the first couple of times you try this method but in the long run given the statistics of games like Roulette and Blackjack you are setting yourself up for complete financial ruin.

As a regular player of Roulette and Blackjack it is not common to have a run of outs that could easily wipe out a $500 or even $1,000 bankroll and then on top of that you have the table limits which the casino puts in place to make sure they win longterm.  Remember the casino is there to make a profit from players, not for the players to make a profit from the casino although if you play smart you can easily make a profit from the casino.

For a Winning Roulette System complete with Staking Plan visit Winning Roulette Systems

There are many variations of these simple systems which include the:

Paroli Betting System
1-3-2-6 Betting System and of course
Labouchere Betting System