In contrast, casinos have a 4-7% house edge on video slots. That gives the casino a house edge of 2.7%, which is not unreasonable.
However, because of the green zero, the odds of winning that bet are 36 to 1. If you place straight-up bets when playing roulette, you will win 35 to 1. When the green zero lands, the casino essentially wins all bets aside from those that wagered on that number. It is excluded from all bets aside from those placed directly on that number. As the zero is green and not even or odd, it nullifies most other bets on the board. In short, the green zero is the segment on the roulette wheel that provides the casino with an edge. What is the Green Zero for in the Game of Roulette?
