The Martingale Betting System is one of the simplest betting systems with only two rules you should follow. It instructs the player to double the bets he makes when he loses and to bet his base stake when he wins. It attempts to make the most out of winning streaks. It can help you generate money in the short term but it is not perfect for gaining money in the long run. It is designed to be used in games like Blackjack, Roulette, Craps and others. Players usually take a large risk for a small reward, which makes the system not perfect.
D’Alembert Betting System
The D’Alembert Betting System is an adaptation of the Martingale System which can be used on even money wagers. It increases your bets after you win, requires to decrease your bets after a loss. It is not perfect for long run betting.