A casino bonus deposit is an enticing offer provided by online casinos to attract new players and retain existing ones. Typically, it involves matching a percentage of the player's initial deposit, allowing them to play with extra funds. For example, a 100% bonus on a $100 deposit gives the player an additional $100 to wager. These bonuses often come with specific terms and conditions, such as wagering requirements, which players must meet before withdrawing any winnings. Overall, bonus deposits enhance the gaming experience, providing more opportunities to explore various games and increase potential payouts.