Roulette is a simple game. The dealer, also known as a croupier, spins a ball over a wheel with 36 numbered slots and two zeros (for American roulette). The slot the ball falls into is the winning number. Gameplay is simple at face value, but winning at roulette isn’t so simple.
The casino only pays 35-1 for a bet on a specific number. If casinos paid true odds they would offer a 38-1 return on a roulette number wager. The probability of getting a winning number on a single roll is 2.63%. The casinos have a 5.26% house edge on a single number wager in roulette. In fact, that’s the house edge the casino has for most wagers in roulette. That’s quite a large advantage for the casino and players have been trying to find the perfect system and strategy to beat roulette for years.