I didn't get them all, but I still found it too easy because they were mostly listed in alphabetical order. I would suggest shuffling them to make it a little harder (although some, like San Marino, Andorra and United Kingdom of Great Britain and Northern Ireland, will always be gimmes.
I would give it a little more time, atleast 30seconds, you have plenty of time to do the ones in latin/roman alphabet, but the ones in cyrillic alphabet you dont see at first glance, you have to decode them, which takes time. And by the time I had written all the others, I was out of times to figure the cyrillic ones out.
I never knew that serbia, (and bulgaria) used the cyrillic alphabet.
I never knew that serbia, (and bulgaria) used the cyrillic alphabet.