A First Deposit Match Bonus is a promotional offer commonly used by online casinos and sportsbooks to attract new players. When a user makes their initial deposit, the platform matches a percentage of that amount, effectively doubling the player's bankroll up to a specified limit. This bonus allows newcomers to explore games or betting options with extra funds, enhancing their overall experience. However, it's essential to review the terms and conditions, as wagering requirements and restrictions may apply before any winnings can be withdrawn.