This is fun and coincides with my recent obsession with geography quizzes. I just don't like how it gets weirdly specific with everything else except Europe, making the Europe quiz the easiest by far. North America was the hardest for me as it got deep into 'murican history which I'm clueless about - on the other hand I was at massive advantage when it got specific with South America and Brazil. Yet I still did better in Europe not really knowing anything about european history...
All of that said, I'm eager for a possible future update including a worldwide mode!