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 play various games. This type of promotion is a great way to test the waters, as it provides an opportunity to win real money while familiarizing oneself with the casino's offerings. However, players should always check the terms and conditions, as wagering requirements and game restrictions may apply.