The "En Prison" Rule in Roulette

Roulette is one of the most iconic and captivating casino games. While it comes in various versions, French roulette offers a unique and advantageous feature: the "En Prison" rule. Specific to this version, it can significantly reduce your losses and improve your chances of success. Discover everything about this strategic rule and how to use it to your advantage.

What is the "En Prison" Rule?

The "En Prison" rule is a mechanism that gives players a second chance to recover their bet when wagering on outside bets (Red/Black, Odd/Even, Low/High) and the ball lands on zero. Instead of losing your bet immediately, it is placed "in prison" for the next spin.

Origin and Exclusivity

This rule was introduced in European casinos to attract more players.
It is exclusively available in French roulette, a version known for its player-friendly conditions.
Do not confuse "En Prison" with the "La Partage" rule. While "La Partage" immediately refunds half the bet, "En Prison" locks the bet for an additional spin, offering another chance to recover it.

How Does the "En Prison" Rule Work?

The implementation of the "En Prison" rule is simple and straightforward. Here's how it works:

You place an outside bet, for example, €100 on Red.
If the ball lands on zero, your bet is placed "in prison."
On the next spin, If Red wins, you recover your €100, if Red loses, the bet is forfeited.

Strategic Impact

This rule gives you a second chance to recover your bet, which can extend your gameplay without an immediate loss. It also reduces the psychological impact of unfavorable outcomes, which is crucial for seasoned players.

Advantages and Limitations of the "En Prison" Rule

Advantages:

Reduction of the house edge: With "En Prison," the house edge on outside bets is reduced to 1.35%, compared to 2.7% without this rule.
Loss management: The opportunity to recover your bet on the next spin mitigates immediate risks.
Defensive strategy: Players can maintain their bankroll longer, making it ideal for cautious strategies.
A more balanced game: Unlike American roulette, where the double zero significantly increases the house edge, French roulette with "En Prison" is far more favorable to players.

Limitations:

Restricted to outside bets: Inside bets (straight-up numbers, splits, corners, etc.) do not benefit from this rule.
No guarantee of recovery: Your bet is still subject to the chance outcome of the next spin.
Limited availability: This rule is rarely offered outside of European casinos or certain specific online variants.

Strategies to Maximize the "En Prison" Rule

To make the most of this rule, here are some tailored strategies:

Prioritize outside bets: The "En Prison" rule only applies to bets on Red/Black, Odd/Even, or Low/High. These bets offer moderate risk and an opportunity to use the rule effectively.
Use betting systems: Systems like the Martingale work well with "En Prison." By doubling your bet after a loss, the reduced risk on zero can help you maintain consistent gameplay.

Where to Find Tables with the "En Prison" Rule?

In Land-Based Casinos

The "En Prison" rule is primarily available in European casinos, notably in France, Monaco, and some high-end establishments in Switzerland. It is less common in American casinos, which favor roulette with a double zero.

In Online Casinos

Many online casinos offer French roulette variants that include the "En Prison" rule. Check the game rules or help section to confirm if this option is available.

FAQ About the "En Prison" Rule

What is the difference between "En Prison" and "La Partage"?
"En Prison" holds the bet for an additional spin, while "La Partage" immediately refunds half the bet.
Does the rule apply to inside bets?
No, it is only valid for outside bets.
Is this rule available online?
Yes, but it is limited to French roulette variants. Always read the rules carefully before playing.
Why isn’t this rule used in American roulette?
American roulette is designed to maximize the house edge, with a double zero that further increases this advantage.

Conclusion

The "En Prison" rule is an essential strategic tool for French roulette players. By reducing the house edge and offering a second chance to recover your bet, it promotes a more balanced and less risky game. If you want to maximize your opportunities while minimizing your losses, choose tables that feature this rule.