Quickly and simply
Author Comments
Test your geographical skills with this geography quiz, and try to score a higher score, than your friends.
Easy, except for a few of the flags. However, with things like these, you either know 'em or you don't, so the difficulty depends more on the person playing than on the quiz (unless you go for real obscure landmarks and countries/flags). All in all, it's neat, but not extraordinary.
I'd love to see a US vs. Europe version of this: a set of questions for Europeans about the US and its States, and a set of questions for Americans about European countries.
Gaming with education - great :)