Visa Inc, commonly known as Visa, is nothing more than an American multinational financial services corporation from Foster City, California. Its purpose is to facilitate electronic funds transfers worldwide, mostly by using a Visa credit/debit card and gift cards. There is not one online casino in this world which doesn't accept Visa for deposits or cash out.
Sudan has had government issues for many years but now a new government transition is being made, which should be for the betterment of the country. Gambling is not permitted in Sudan. There are no land based opportunities for this. The internet is censored making it difficult for online gambling, even though it's illegal.