A free spin is essentially an offer that a casino gives to its players to spin the reels free of charge and have the opportunity to win real cash. The free spins may be given to both new and current customers, and it's one way to reward and encourage them to continue betting.
The South American state Ecuador is famous for its biodiversity, and it is the only country in the world to legally define the "rights of the nature". Its legislation on gambling is ambiguous, and there has been a recent crackdown, forcing many traditional casinos to close. International mobile casinos remain available for locals, however.