If the ball lands on zero in roulette, it affects the outcome of various bets. In European roulette, players with outside bets, such as red/black or odd/even, lose their wagers. However, players with inside bets, like specific numbers that include zero, win. Additionally, for bets like la partage or en prison in some European casinos, players may have a chance to recover part of their wager or leave it for the next round.