Free spins and no deposit bonuses are popular promotions offered by online casinos to attract new players. Free spins allow users to play specific slot games without using their own money, while no deposit bonuses provide a small amount of bonus cash just for signing up. These offers enable players to explore the casino's games and features risk-free, increasing their chances of winning without any initial investment. However, it's essential to read the terms and conditions, as wagering requirements and game restrictions may apply.