A sign-up bonus refers to an offer that casino gives to new customers once they sign up on their site. Casinos use these bonuses to attract new customers and provide them with some funds to start betting. Sign-up bonuses are not withdraw-able and should be used within a timelimit, depending on the casino.
Nigeria is the 8th most populated country in the world, and has the highest population of any country in Africa. Some forms of gambling are legal in Nigeria, although mobile online gambling is not yet regulated, which means that players in Nigeria often use foreign mobile online casinos as it has become a popular trend.