European, American, and French roulette all share the same basic objective: predict the pocket in which the ball will land. However, they do not provide identical probabilities or table rules.

The most important difference is the number of green zero pockets. European and French wheels commonly contain one zero, while American roulette normally includes both zero and double zero. Some French-style tables also apply special rules when a single zero appears after an even-money wager.

Understanding these variations is essential because a familiar bet may produce a different long-term mathematical result depending on the wheel being used. The standard inside and outside payouts may remain unchanged even when the number of possible pockets increases.

This article provides roulette rules explained across physical, online, and live dealer formats. It covers wheel variations, inside and outside bets, special zero rules, table procedures, and practical checks for beginners. Roulette remains a random game, so none of these versions guarantees profit.

European Roulette Uses One Zero

European roulette has 37 pockets: numbers 1 through 36 and one green zero. Players can choose inside bets on exact numbers or outside bets covering larger groups.

A straight-up wager normally pays 35 to 1, while dozens and columns pay 2 to 1. Red-or-black, odd-or-even, and high-or-low bets pay even money.

The single zero is not included in the standard outside categories. Its presence creates the casino advantage despite the near-half coverage of even-money wagers.

American Roulette Adds Double Zero

American roulette has 38 pockets because it adds double zero to the European layout. Standard payouts generally remain the same.

This means a straight-up bet still pays 35 to 1 despite having one additional possible losing outcome. Outside bets also lose when either zero or double zero appears.

The American layout may offer a five-number top-line bet covering 0, 00, 1, 2, and 3. MGM lists this wager with a 6-to-1 payout.

French Roulette and La Partage

French roulette normally uses a single-zero wheel. Some tables apply the La Partage rule to red-or-black, odd-or-even, and high-or-low bets.

When the ball lands on zero, half of an eligible even-money stake is returned and the other half is lost. This reduces the impact of zero on those specific wagers.

The rule does not normally protect straight-up, split, street, corner, dozen, or column bets. Players should verify whether La Partage is actually offered rather than assuming that every single-zero game includes it.

How the En Prison Rule Works

En Prison is another rule that may apply after zero lands on an even-money wager. Instead of immediately losing the complete bet, the stake remains locked for the next spin.

When the next result would have won the original wager, the stake is generally returned without profit. If the next result loses, the imprisoned stake is forfeited.

Procedures can vary, particularly when zero appears again. Always read the house rules before relying on this feature.

Online RNG and Live Dealer Roulette

Automated online roulette normally uses a random number generator to select a result. The software maps an unpredictable number to one of the available wheel outcomes and then displays the spin.

The UK Gambling Commission explains that virtual roulette systems request random values within a specified range and use game-control components to determine and display the result.

Live dealer roulette instead streams a physical wheel operated by a croupier. The screen is digital, but the result comes from the ball and wheel rather than an animated RNG spin.

Inside and Outside Bets Remain Similar

Across most variants, inside wagers still include straight-up, split, street, corner, and six-line bets. Outside wagers include dozens, columns, colors, parity, and high-or-low options.

The main difference is not usually the advertised payment. It is the number of pockets that can cause the wager to lose.

For this reason, players should identify the wheel type before examining a betting system or comparing two roulette tables.

Table Limits and Betting Procedures

Physical tables may issue colored non-value chips so the dealer can distinguish one player’s wagers from another’s. These chips usually need to be exchanged at the same table before leaving.

Online interfaces display the chip denomination and total stake digitally. Confirm the complete wager before pressing the betting button, especially when repeating or doubling a previous selection.

Once “no more bets” is announced, wagers cannot be changed until the round has been settled.

European, American, and French roulette use similar layouts, but their zero rules create meaningful differences. European roulette uses one zero, American roulette adds double zero, and some French-style games offer La Partage or En Prison protection on selected even-money wagers.

Inside bets offer narrow coverage and larger payouts, while outside bets cover more numbers and pay less. Neither category removes the house advantage. Before playing, verify the number of zero pockets, special rules, minimum stake, maximum exposure, and whether the game uses an RNG or physical live wheel.

Use account reminders or a separate timer, maintain a fixed loss limit, and never increase the budget because of previous results. Choose the format whose complete rules you understand – or choose not to wager.