This is done automatically and reduces the house edge of all even-money bets to just 1. The rule does not priwon to other outside bets like the dozens or columns bet.is social gambling legal in new york FREE NONLINE ROULETTE In roulette, the en prison rule is an opportunity to recover one's stakes after a spin of zero, In European casinos, where la partage is customary, the player may be given the option instead to place their original stake en prison ("in prison" in. Not all wheels and layouts are the same, and French casinos often offer "La Partage" and "En Prison," which make for better player odds. In addition to the lower house edge of the single-zero wheel, many French roulette games also offer one of two additional options: "La Partage. One of the first things that a roulette player learns is the difference between the American and European roulette wheel. The American wheel has two 'zero' spots.