However, both single-zero European roulette and double-zero American roulette have additional numbers, so the house has more opportunities to win, whereas the player’s payout stays at 35/1. In all roulette variants, the payout is 35/1 for straight up bets on one of the numbers, which would be fair if there were 36 pockets.
On average, the casino makes a profit on all bets placed over time. It provides a predictable long-term advantage to the casino (“house”), meaning that when you win, the payout from that win is never the “true odds”. Most casino games have a built-in profit for the casino, which we call the house edge. Before we talk about how double-zero American roulette increases the house edge, it’s important to understand what “house edge” actually means.
