Thanks, I've added Ivory Coast. I seem to remember at an earlier stage Jetpunk used Côte d'Ivoire, but it's definitely Ivory Coast now on the Countries of the World quiz.
Very cool quiz and original idea. One thing: the convention on this site is to call the country "Cabo Verde," which would put it under "AB" category as well as "DE."
Great quiz, but I disagree with the inclusion of "ZA" as consecutive letters. They are not. There are no letters before A and none after Z; the alphabet does not start at any point and continue in a circle.
Thanks!