I think the basic rules of roulette involve players betting on where a ball will land on a spinning wheel. Bets can be placed on individual numbers, groups of numbers, or colors (red or black). The croupier spins the wheel and the ball, and payouts are determined based on the type of bet placed and I also feel that the main variations of roulette are European, American, and French. European roulette has 37 pockets, including a single zero, while American roulette has 38 pockets with both a single and double zero, giving the house a higher edge. French roulette, similar to European, has additional rules like "La Partage" or "En Prison," which reduce losses on even-money bets when the ball lands on zero.