American Roulette vs European Roulette
You can usually enjoy American roulette and European roulette at most online casinos. But what are the major differences? In a European roulette game, the wheel has 37 pockets (1-36 and the single zero). In American roulette, there is an extra green pocket, the double zero.
So, why does this make a difference? Because your outside bets lose if the double zero pocket comes up and the house edge will increase. In European roulette, the house edge is just 2.7%. In American roulette, however, the edge increases to 5.26%.