An online casino sign-up bonus is a promotional offer designed to attract new players by providing them with extra funds or free spins upon registration. Typically, these bonuses come in various forms, such as a percentage match on the initial deposit or no-deposit bonuses that allow players to try games without risking their own money. This incentive not only enhances the gaming experience but also encourages players to explore the casino's offerings. However, it's essential to read the terms and conditions, as wagering requirements and restrictions may apply before cashing out any winnings.