In 2021, US online casinos offered enticing no deposit bonus codes, allowing players to explore games without risking their own money. These codes provided free credits or spins, enabling new users to test the platform and its offerings. With a variety of promotions available, players could enjoy slots, table games, and more, all while keeping potential winnings. However, it was essential to read the terms and conditions, as wagering requirements and withdrawal limits often applied. Overall, no deposit bonus codes were a popular way for players to kickstart their online gaming experience.