Rule record
En Prison
Even-money stakes may be held for the next spin after zero. Terms vary, so table rules must be checked.
Odds snapshot
- Zeroes
- 1
- Typical house edge
- About 1.35% on even-money bets, depending on implementation
- Best for
- French roulette explainers and casino rule audits.
- Applies to
- French roulette explainers and casino rule audits.
Publishing rule
Every table page should state the wheel type, whether special even-money rules apply, and the last date the minimum was checked.
En Prison in practice
En Prison belongs in rule-quality comparisons because even-money treatment on zero can change the effective cost of common outside bets.
The site should only mark a table with this rule when the table rules confirm it. Do not infer it from the word French alone.
For destination pages, this rule can justify a separate note even if the table minimum is higher than a basic single-zero table.
Related operators
| Operator | Market | Inside | Outside | Live | RNG | Providers | Status |
|---|---|---|---|---|---|---|---|
| bet365 EuropeanFrenchAutoMultiplier |
UK UKGC flagged |
research lead: 20p | research lead: 20p | research lead: 20p | research lead: 1p | EvolutionPragmatic PlayPlaytech | disabled public-provider-source; stakes-unverified Playtech confirms a dedicated bet365 live casino studio with classic single-zero roulette tables and Super Spin Roulette. Current GBP table minimums still need a permitted lobby check. |
| Betfair Casino EuropeanFrenchLive |
UK UKGC flagged |
research lead: 1p | research lead: 1p | research lead: 25p | research lead: 1p | PlaytechEvolution | disabled public-provider-source; stakes-unverified Playtech confirms Cash Collect Roulette Live launched with Betfair in the UK before wider release. Current table minimums still need a permitted lobby check. |
| Grosvenor Casino EuropeanFrenchLive |
UK UKGC flagged |
research lead: 10p | research lead: 10p | research lead: 10p | research lead: 10p | EvolutionPlaytech | disabled research-candidate Good low-stakes UK candidate from research backlog. Needs a fresh logged-in live-table check. |
Related destinations
| Destination | Country | Typical minimum | Rule types | Confidence | Notes |
|---|---|---|---|---|---|
| London casinos London |
GB | £1-£25 | EuropeanFrenchElectronicLive | needs-reports 2026-05-11 |
Bridge topic between both sites. UK commercial rendering remains informational only. |
| Monte Carlo Monte Carlo |
MC | €5-€100 | EuropeanFrenchLa Partage | needs-reports 2026-05-11 |
High-value destination page. Capture casino, room, currency, and rule set. |
| Paris casino clubs Paris |
FR | € varies | FrenchEuropeanLa Partage | needs-reports 2026-05-11 |
Useful rule-quality destination because French roulette terms matter. |
| European destination casinos Varies |
EU | €5-€100 | EuropeanFrenchLa PartageElectronic | needs-reports 2026-05-11 |
Hub for Baden-Baden, Vienna, Barcelona, and other European venue reports. |