Enter these "countries" that, although appear on many reports or are listed individually from their parent country, are not included on the "Countries of the World Quiz".
Great! Kosovo has become a lake. It would be nice if 'normal' countries appeared with a different colour from the start (eg grey or directly in green) so you'd know where to look for the missing ones
And also Reunion, Guadeloupe, Martinique etc are all actual French departments. Don't se how they are any different from the likes of Guam which isn't included.
Could you add more spelling variations for each country, Some of the countries listed are territories of others either remove them or tell us that territories are included.
You did not include Hawaii which has the same rights as mainland USA. You did not include Galápagos which has the same rights as mainland Ecuador. You did include French Guiana which has the same rights as mainland France. Seems a bit inconsistent to me.