European or single zero roulette wheels have just 37 numbers that could turn out winners, the numbers 0-36. In Europe, where roulette originated, the game’s wheel has a green space labeled “0.” When American roulette wheels were redesigned to add another green slot, the “00” slot, the house edge increased from 2.7% to 5.26%.
The addition of a single space on the wheel has a significant impact on the casinos’ edge. The difference in house edge between a single zero roulette wheel and a double zero roulette wheel is considerable. A single zero roulette game uses a roulette wheel with just one “0” space, instead of the “0” and “00” spots on American style roulette wheels. Single zero roulette is another name for European style roulette.
