How many countries can you name in the countries' native names?
Has to be a sovereign nation, so Scotland and England don't count, etc...
Goes by the official language which is most spoken as a first language. For example, name of Ivory Coast in French will be accepted though French is not the most common mother tongue in Ivory Coast, as it is the only official language.
If a country doesn't have an official language, then the quiz goes by the language with the most first language speakers. For example, though the US doesn't have an official language, English is taken as it is the language which is most spoken as mother tongue.
All the country names are romanized and are in latin alphabets, so you need not worry looking for your Cyrillic, Arabic and Korean keyboards:)