Can you name something in the geographical category that begins with each of the given letters?
Deserts must be over 50,000 km, Religions over 1 million followers, Cities over 1 million people, Islands over 25,000 sq km, Lakes over 3,000 sq km, Rivers over 1,000 km,
The quiz description says cities of over 1 million people only are counted. I know, I was frustrated too when Hakodate for Japanese H cities and Annapolis for American A cities weren't being accepted until I saw that.
This would definitely benefit from widening the pool a bit. It feels weird that Vladivostok isn't considered a Russian city and the Comoros not an island nation. I spent most of the time on the Europe question trying to figure out which ones would be big enough, not which ones there actually are.
P, just P, is apparently a US city - and Comoros doesn't exist. Good idea, but needs refining. Quite a few of the quizzes in this set have some basic errors which detract from the enjoyment.