An online casino no deposit bonus code is a promotional offer that allows players to enjoy games without having to make an initial deposit. By entering a specific code during registration, players can receive free credits or spins, enabling them to explore the casino's offerings risk-free. This type of bonus is an excellent way for newcomers to test the waters and experience various games while potentially winning real money. However, it's essential to read the terms and conditions, as wagering requirements and withdrawal limits may apply.