This is a random bonus offered to players even without having o send money to their betting accounts. It could be either a reward for loyalty or a welcome carrot. Either way, the player gets to benefit because they can use it to play various games in the casino and get tangible wins.
South Africa is the birthplace of president Nelson Mandela, one of the most prominent civil rights leaders in the entire world. South Africa has banned most forms of gambling and has an unusually strict stance on mobile online gambling platforms. The few types of legal gambling are controlled by a state monopoly.