A Roulette wheel holds a fixed set of numbered pockets around its rim, with the zero (or zeros) breaking the usual pattern of paired odd, even, red and black numbers. The betting table lays the same numbers across three columns of twelve rows, plus a separate zero box, so every wheel position lines up with a matching spot on the layout.
Wheel Structure
European and French wheels carry 37 pockets numbered 0 to 36. American wheels add a second 00 pocket for 38 pockets total. The zero and double zero sit in green pockets, separate from the standard red and black sequence.
Number Layout
Numbers alternate around the wheel rim in a fixed order that skips straight numerical sequence, spreading odd, even, high and low values evenly across the rim. The betting table below the wheel arranges the same numbers in straight numerical order across three columns for easier bet placement.
Colours
Eighteen pockets show red, eighteen show black, and the zero (plus double zero on American wheels) sits in green. Red and Black bets pay 1:1 and lose automatically when the ball lands on a green pocket, except under French Roulette’s La Partage rule.
Odd and Even Numbers
Numbers 1 to 36 split evenly into 18 odd and 18 even values. Zero and double zero count as neither odd nor even, so Odd or Even bets lose on those pockets outside of the French Roulette La Partage exception.
Low and High Numbers
Low bets cover numbers 1-18, and High bets cover numbers 19-36. Both pay 1:1 and follow the same zero pocket rule as Red/Black and Odd/Even bets.
Betting Areas
The inside betting area sits closest to the number grid and covers Straight Up, Split, Street, Corner and Six Line bets on specific numbers. The outside betting area surrounds the grid and covers Dozen, Column, Red/Black, Odd/Even and Low/High bets on larger number groups.