The “La Partage” rule means that players will receive half of the wagered sum back when the ball lands on zero. This rule always applies to French roulette, but sometimes it is also allowed in the European variant. But if the ball does not land on the wagered combination, they will lose the entire wagered sum. It’s a second spin that heightens the player’s chances. “En Prison” means having a second try if the ball lands on zero. The “En Prison” option is one of the criteria alongside “La Partage” that transforms the European wheel into what is known as French roulette.īoth rules apply to outside bets, meaning any wagering possibility inscribed on the betting table and does not contain each of the numbers. Optional “En Prison” Rule for European Versions.