A Bonus First Deposit is a promotional offer provided by online casinos and betting sites to attract new players. When a user makes their initial deposit, they receive a bonus, often a percentage of the deposit amount, which can be used to play games or place bets. This incentive not only enhances the player's bankroll but also encourages them to explore the platform's offerings. However, it's essential to read the terms and conditions, as these bonuses typically come with wagering requirements and other stipulations that must be met before withdrawals can be made.