When roulette gambling was first brought to the United States, the greedy casino owners took advantage of the game’s popularity by creating a 5.26% house advantage. Some casino owners decided to make this advantage even higher by creating a roulette wheel with 31 numbers. This wheel had a staggering 12.9% house edge. Because of the growing discontent with gamblers, two French brothers Francois and Louis Blanc made the single 0 roulette game in 1842. This resulted in a lowering of the house edge to 2.7% and the roulette gambling’s success.