As the name says, this is free money deposited in the player's account by the casino even without they (the player) having to initiate a transaction. This bonus is given either as a reward for staying loyal or a way to usher in new players. The player can use it as they please depending on their skill.
South Africa is a country that is proud of its biodiversity and amazing intact nature. While land-based casinos are legal, online gambling in this country is illegal, except for the national lottery, and a few sports and horse racing betting sites. South African players are being prosecuted by law if caught playing on foreign websites.