The En Prison rule is a particular bonus feature that exists only in French roulette games. It allows gamblers to ask for a second chance if they’ve previously placed an even-money bet. In other words, players get a free re-spin.
Their stake and type of bet remain the same as they were in the previous spin.
It’s crucial to note that roulette players can use this rule only if the ball lands in the 0 pocket. Moreover, the En Prison rule isn’t available in every casino that offers roulette.