The zero pocket is colored green and other numbers are colored black and red (18 of each). Going back to the roulette layout, all roulette tables have 37 slots - numbered 0–36. That is if you’re playing the French or European version - the American variant has 38 slots.įor the sake of explanation, we’ll stick to the European format ( shown). For all the beginners out there, the roulette wheel consists of 37 slots or numbered pockets.