This is a quid pro quo bonus; scratch my back I scratch yours. Players receive this after putting some money in their account. The more the money deposited, the higher the bonus. At the end of the day, therefore, the player is the winner because they get to play with more than their capital investment.
Serbia is one of the biggest raspberry exporters in the world, accounting for about 30% of the world's total supply. As for gambling, people often come to local casinos to play, but with the increasing popularity of online mobile casinos, people can stay at home and still enjoy the same games.