With 37 pockets for the ball to land in, as opposed to 38 in American Roulette, the odds of the ball landing on a number you backed, let’s say 12, is one in 37 times, rather than one in 38. Instantly, your odds are better with European Roulette.
But there is another way the house edge comes down in the European version. The Europeans have something called ‘En Prison’, or ‘In Prison’ for want of a translation. This is good news for a player, and far from the misery of being imprisoned sounds. (資料來源 )
You’ll be aware that the zero and double zero in American Roulette is generally bad news for the player. The exception is when you have placed a bet on the white ball landing there or took out a Five Number Bet (more of that later). All other bets on the table are forfeited.
In European Roulette, the numbers on the wheel are in a different order, and there is no 00 segment, only a single green zero. It’s a small distinction, but one, when you understand the nuances, that can make a significant difference to your win rate in the long term. (資料來源 )