Liked it. Great concept. If only you could implement upgrade system and make missions a little more diversified. Nice touch on limiting speed when cloaked.
Not something we haven't seen a hundred times before. Finished all the levels and they are way too easy. Then again, not many games give the player opportunity to COPLETE a level. 2/5
http://en.wikipedia.org/wiki/List_of_sovereign_states_and_dependent_territories_in_Europe
Here's a list of 50 sovereign and recognized states. It has Armenia, Georgia, Azerbaijan and Kazakhstan which are mostly Asian countries but, like Turkey, have a part of their territory in Europe.
From your list all the countries you haven't shown, except for Vatican, are dependent territories which means that while they do poses certain level of autonomy they are not sovereign. On the other hand you have Kosovo which is not internationally recognized.
Thanks for the note. Will repair it.
I used this page
http://en.wikipedia.org/wiki/List_of_European_countries_by_population.
It says 52 countries. 8 are not shown because they are very small on the map.
So you see 44 plus Turkey and Cyprus. I don't know, is this page/map ok, what do you think guys?
Thanks, I will surely make a patch.