This additional double zero in American Roulette increases the house edge to 5.26%, compared to 2.7% in European Roulette, making European Roulette more favorable for players. European Roulette has a single zero pocket, while American Roulette has a single and double zero pocket.
One significant difference between European and American Roulette is the rules and betting options.
Comparing Roulette Variations European Roulette vs American Roulette