The En Prison Rule is a fantastic addition to french roulette that reduces the house edge on outside even money bets by half. Whilst you'll not find it too difficult to find in a brick and mortar casino, not many places offer it online. But some do - you just have to know where to look.
Usually found on french roulette tables with a single zero, the En Prison Rule comes into effect when the ball lands on the zero and you have placed an even money bet such as red-black. In this situation the bet is held 'en prison' and is carried over to the next spin. If the bet goes on to win, your original stake is returned. If it loses, well, you lose it. And if it is another zero the bet carries on again.
Another variation of this is the La Partage Rule where instead of imprisoning the bet, an amount equal to half the bet is returned. You could of course then go on to wager the half bet if you so wished.
What is great about these rules is the significant effect it has on the house edge. In roulette the edge comes from the zero, so by returning half your stake when it hits, or giving you a coin toss at getting your whole bet back, the house edge is reduced from 2.7% to 1.35%.
So now we've wet your whistle, you probably want to know where you can play it online. As we mentioned at the beginning of the article, you wont find it too often. But we can recommend one casino which offers this rule on their french roulette tables - Imperial Casino.
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