"What's the difference between an American and a European roulette wheel?" An American roulette wheel has an extra slot; 00. A European roulette wheel has the numbers 1-36, plus a slot for zero. This extra slot on the American wheel means that the odds of winning are slightly worse on an American wheel. On both wheels, you may think that there is no rhyme or reason as to how the numbers are arranged, but there is; the numbers are arranged this way so that the odds of landing on high, odd, low or even numbers are evenly distributed. The zero and double zero numbers are in green and on opposite sides of the wheel, the colors and odd/even numbers alternate, and the numbers themselves are randomly distributed.
