Free spins casinos allow the player to have free spins on their slot games. Sometimes this bonus is paired with a deposit requirement, but occasionally it stands alone to attract new players. Free spin casinos often simply credit the spins to the players account, and then they can be used on a number of different types of slot games. However, there are casinos that will let the player spin a certain number of times for free without even creating an account, but these online casinos are relatively rare. Sometimes the online casino will allow the player to keep their winnings from the free spins, but there is usually a wagering requirement involved.