A mobile casino free spins bonus is a bonus offered to players at casinos in Saudi Arabia to give them a chance to win real money without having to deposit any money. This bonus is a popular bonus among slot players in Saudi Arabia as free spins give the player a chance to win real money without having to risk their own money. Free spins can be offered in different ways depending on the casino, and players should always check the casino's website for details on their specific free spins bonus.