You probably have either heard of and/or used these sites previously, but if there’s at least one person out there who hasn’t, then posting them was worth it. These websites have a variety of quizzes that are geographical in nature. Be careful, sometimes they can be dated in terms of information, or it isn’t clear where the data they used is from (ie urban population quizzes). But in general they are fantastic item to close out a lesson that ended too early, to help memorise capitals, flags, or countries, and add a bit of a competitive edge into the geography classroom.
https://www.sporcle.com/games/category/geography
https://www.jetpunk.com/tags/geography