Part I: Games & Gaming · Wheel Games — Roulette

Single Zero

Roulette

The green-colored pocket on European and French roulette wheels marked with the number “0”. The single zero is the source of the casino’s mathematical advantage in roulette, as all bets (except direct bets on zero itself) lose when zero is spun. On a single-zero wheel, the house edge is 2.70% on all bets except even-money bets with La Partage or En Prison (1.35%). The single-zero wheel is the standard in all markets outside the United States and is the only version typically found in Asia-Pacific casinos. The presence of only one zero pocket gives players significantly better odds than the American double-zero variant.

In practice

Macau regulations require single-zero roulette; double-zero wheels are not permitted. Singapore and Australian casinos also exclusively offer single-zero roulette.

One entry from the Casino Industry Glossary — 1,157 terms written for surveillance, compliance and operations professionals rather than for players. Definitions describe industry usage; where a term carries a regulatory meaning, verify against the instrument that governs your jurisdiction.