Enjoyed it :)
Maybe a little bit too easy. How about a Max-Click-Nr. per Lvl? Or a Score for beeing very fast?
This could result in a rating like "Well u did it in 10 sec. this are 3 stars!" -> Achievements!
We love Achievements :P
1. Don't ask for every country during the levels. Ask for 10 or 15 to pass a level. And screw over those "lives". We're hunting highscores so decrease our score for wrong clicks but don't stop me from playing. Or I'll do so.
2. Don't ask for tiny countries like San Marino or Monaco. Or if you do so, point them out clearly, so we know what is meant.
3. Show a solution after the player failed the lvls about EU,Nato and € and make it stay as long as we wish.
4. Mute Button
5. Music, so I can mute sth. (maybe something relaxing)
Waiting for the right colors of your towers sucks. Why don't u limit the number of upgrades with the same color up to 2 and let the rest be as the player wishes? Besides of that: Great game! :)
Du solltest vielleicht nicht "Ziel" ins erste Lvl schreiben, wenn sogar noch [Eng] im Titel steht ^^
Aber schön, dass du die Idee mit den Badges umsetzt ;D