Unlike other transatlantic variants, it has a single zero pocket, meaning the house edge is lower. The European roulette wheel differs from its counterparts in one key way: it features only 37 numbers. Essentially, you’re looking to guess where on the wheel the ball will land, and this applies no matter which roulette variant you’re playing. Although there are three different types of roulette and three sets of rules to learn, the game remains one of the easiest to play and understand.