A $15 no deposit bonus is a promotional offer from online casinos or gaming platforms that allows new players to try out games without having to make an initial deposit. This bonus provides players with a risk-free opportunity to explore the site, test various games, and potentially win real money. Typically, players must create an account to claim the bonus, and there may be specific wagering requirements before any winnings can be withdrawn. It's an enticing way for casinos to attract new customers while giving players a chance to experience the thrill of gaming without financial commitment.