Good compilation of countries with the highest numbers of gamblers. I am not surprised to see US leading the group though, they have the highest and largest casino in major cities. Even tourist travel to come have a fun time in their casinos. Nevertheless I was surprised no African country was mentioned there. I may not know in other African countries but you see in Nigeria we have lots of gamblers. No joke, the numbers are increasing every single day both in online casinos and in local betting shop.