The main reason for the free spins no-deposit bonuses popularity is the low risk of losing bankroll while playing your favorite games. Newly registered players benefit from bonus spins on sign up without a deposit since it is a chance to try out a casino risk-free and win money.

Additionally, "free play" is a way for the casino to control the amount of money that is spent within their establishment. It also allows the casino to offer a prize without directly giving out cash, which may have legal and regulatory implications.