Could you maybe add Czechia for Czech Republic? I think that is what they want to be called, and it is on the Countries of the World Quiz and many others. Thanks for the great Quiz!
Good quiz, but I think it should be added that the flag must ONLY contain red, blue and white without other colours, and a hint that civil flags may be slightly different from state flags (e.g. without coat of arms) should also be added. I tried Dominican Republic, Slovenia and Paraguay and I was confused that they were not accepted. Also, please accept the spellings "Luxemburg" and "Czechia" as most quizzes do. Thank you!
Luis Boettner (from Paraguay)