Dear Mr. Sun: Why is it that casinos in Monte Carlo and all over Europe make enough money with single-zero roulette while U.S. casinos. In roulette, the en prison rule is an opportunity to recover one's stakes after a spin of zero, customary, the player may be given the option instead to place his original stake en prison ("in prison" in French). Those that do include these Las Vegas Casinos: The Bellagio, MGM Grand, The Mirage, The Rio and The Wynn. My wife, who has been to LV many times, told me recently that the only place she has found a single zero (French) roulette wheel was in Paris. The vast majority of casinos both on the strip and off-strip will feature at least one table. About Las Vegas Hotels Vacation Rentals Restaurants Things to do Flights Travel Forum Airlines Travel Guides Best of Road Trips Help Center. These are all swanky places, and they probably have higher betting minimums than some of the other casinos. Rooms 1 adult in 1 room 2 adults in 1 room More options With it, you write down a series of 7 or 8 numbers.