A popular roulette strategy that is often used by players of online roulette at the online casino is the D’Alembert Roulette Betting System. This strategy advises players to step up the bet by a small margin after a loss and to lessen the bet by the same margin after a win. Similar theories are popularly used in many roulette strategies. The idea behind this theory is to cut down the rate of the value of the players bet. Because there is no outcome probability on the game of roulette the use of these theories is not guaranteed. In addition, with each spin the probabilities renew themselves so even if a player spends a long amount of time playing a number of roulette games one after the other, no actual pattern will be created, so any strategy that is used by the player will not work well over time.