No deposit bonus codes are promotional offers provided by online casinos and gaming platforms that allow players to enjoy games without having to make an initial deposit. These codes can be entered during the registration process or in the cashier section, granting players free credits or spins to explore the site. They serve as an enticing way to attract new customers and give them a risk-free opportunity to experience the gaming environment. However, players should always read the terms and conditions, as wagering requirements and restrictions may apply.