In 2021, many online casinos offered enticing $400 no deposit bonus codes to attract new players. These bonuses allowed users to explore various games without risking their own money, providing a fantastic opportunity to win real cash. Players could simply enter the bonus code during registration to claim their reward, making it an appealing option for both novice and experienced gamblers. However, it was essential to read the terms and conditions, as wagering requirements and game restrictions often applied. Overall, these bonuses enhanced the online gaming experience, offering excitement and potential rewards.