This is the granddaddy of all roulette betting systems. In fact, the Martingale system is probably the oldest betting system ever devised to beat the casinos. Roulette is a negative expectation game. On the American double zero wheel, the house has a edge and there is no betting strategy or. Roulette Betting Strategy - Roulette is a game of pure chance, but it's important to know how to bet and when to cut your losses before the wheel stops. Learn to.