European Roulette is preferred over American Roulette due to its layout and rules. The main difference is the presence of a single zero in European Roulette versus a single and double zero in American Roulette, resulting in a lower house edge of about 2.7% compared to 5.26% in American, some variations of European Roulette include the "La Partage" rule, allowing players to recover half of even-money bets if the ball lands on zero.