European roulette has a zero, while American roulette has a zero and additional double zero. The house edge in the European type is 2.70%, whereas the American version is 5.26%. The former has special bets, call bets and neighbour bets, while the latter has only neighbour bets. The latter has the five-number bet, whereas the former doesn’t. American roulette allows a straight up bet on 00 as well as a split of 0 and 00.