Bonus bets in online roulette can influence the overall house edge by altering the effective payouts and risk for players. When players use bonus bets, they might receive a percentage of their wagers credited back in bonuses, which can enhance their bankroll and provide additional chances to win without increasing their initial stake. However, these bonus bets often come with specific terms and conditions, such as wagering requirements or restrictions on certain types of bets, which can impact how effectively players can utilize them.