An online casino no deposit sign-up bonus is an enticing offer that allows new players to explore a casino's games without having to make an initial deposit. Typically, this bonus comes in the form of free spins or bonus cash, enabling players to try out various games risk-free. It serves as a great way to attract new customers, giving them a taste of the casino experience while encouraging them to return and make future deposits. However, players should always read the terms and conditions, as wagering requirements and game restrictions often apply.