The number layout on the American roulette wheel differs from the one in European roulette, so we want to cover it separately. These two games feature identical layouts, so if you master one wheel layout, you can use all of your knowledge on the other version as well. This design applies both to the European roulette wheel and the French roulette version. There are eighteen black numbers and eighteen red numbers. And, while the red/black pattern continues around the wheel, the numbers don’t follow any pattern you can read into. On each side of the 0 pocket, you’ll find interchanging black and red numbers. The 0 ensures a house advantage, as it’s not included in even-money bets. This includes red/black numbers from 1 to 36 and one green 0. The European roulette wheel has 37 numbers.