Roulette is a game of chance: you bet on where a ball will settle on a numbered wheel, and every spin is random. This page explains the versions you are likely to meet, how the bets and payouts work, how the computer version differs from a live dealer table, and what to check before you play Mr Green roulette.
Common roulette variants
Most roulette games follow one of three versions, and the main difference is the number of green pockets on the wheel. European roulette has 37 pockets, the numbers 1 to 36 and a single zero. American roulette adds a double zero, making 38 pockets, which gives the house a bigger edge on every bet. French roulette uses the same 37-pocket wheel as the European version but adds rules such as en prison and la partage on even-money bets, which can return part of a losing stake.
The variants you find at Mr Green depend on what the casino offers, so check the table name before you sit down. Look at the table limits too, since they set the smallest and largest bet you can place on that table.
How roulette works
The wheel is spun, a ball is released onto it, and once the ball settles in a pocket that number and its colour decide the result. Before the spin you place chips either on a single number, which is an inside bet, or on a group such as red or black, odd or even, dozens or columns, which is an outside bet. A straight bet on one number pays 35 to 1. Even-money bets on red, black, odd, even, 1 to 18 or 19 to 36 pay 1 to 1 and win on slightly less than half the spins.
Each bet is settled separately, so one spin can win some bets and lose others. The zero or zeros always work against the player, and the single-zero wheel gives the house a smaller edge than the double-zero wheel. No betting system changes this. Systems such as Martingale double the stake after each loss, but each spin is independent, so the expected outcome of each bet stays the same while the amount at risk can climb quickly.
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RNG roulette and live dealer roulette
The RNG version is played against a random number generator. The result is decided by software when the spin starts, and you play at your own pace with no dealer. Live dealer roulette uses a real wheel in a studio, streamed to your screen, with a dealer who spins the wheel and settles the bets. The bets and payouts are the same for the same wheel type, but a live table moves at the dealer's pace.
Game shows are a different format. They add bonus wheels or multipliers and follow their own rules, which the Live Casino page describes alongside the standard tables.
Practical points before you play
Learn what each bet pays before you place a stake, and check the table limits first. Set a budget before you start, decide how long you will play, and stop when either limit is reached. Choose a stake you are comfortable losing, and do not raise it to chase losses. If play starts to take more time or money than you planned, the safer gambling page has information on keeping play in control.
