La partage
When zero lands on an eligible even-money bet, half the wager is returned and half is lost. The zero event therefore costs only half a unit.
Because zero occurs once in 37 spins, the expected loss becomes one-half divided by 37, about 1.35%.
En prison
Instead of immediately returning half, the wager can remain imprisoned for a subsequent spin. Depending on the rule, a winning next result may release the stake without profit.
Multi-zero sequences and casino-specific settlement details can make en-prison variants differ. Read the actual rule.
Eligible bets
The favorable treatment normally applies only to even-money outside bets. Straight numbers, dozens, columns, and other wagers retain their usual edge.
A French-style layout or racetrack display does not by itself prove that la partage is offered.
Table selection
The best roulette choice is often the combination of single zero, a favorable zero rule, acceptable minimum, and manageable pace.
Special rules lower expected cost but do not make the game positive expectation.
The label is not the specification
For La Partage, En Prison and French Roulette, wheel type and special rules such as la partage or en prison determine the price; chip placement does not change the probability.
Check wheel pocket count and any la partage or en prison rule before evaluating a roulette claim; a staking pattern does not change the next spin.
Treat La Partage, En Prison and French Roulette as its own rules package. A familiar brand or layout is not enough to import a percentage from another version.
What to record for Roulette
- Base-game change
- optional pay table
- progressive contribution
If the posted La Partage, En Prison and French Roulette version cannot be identified, keep the variants separate and decline to quote a blended edge.
La Partage, En Prison and French Roulette is reviewed against the Roulette rules described above. A different pay table or procedure is a different model. Editorial review updated September 24, 2026.