An online casino sign-up bonus no deposit is an enticing offer that allows new players to explore a casino's games without risking their own money. Upon registration, players receive a bonus, typically in the form of free spins or bonus cash, which can be used to try out various games. This promotional strategy not only attracts new users but also provides an opportunity to win real money without an initial financial commitment. However, it's essential to read the terms and conditions, as wagering requirements and game restrictions may apply.