Very cute game! I felt the music choice is spot on. I wish I was better with other languages, so I could get further...
I really like the educational direction of this game and think you could take it even further. For example, you could have a separate part of the game for looking up words in different languages and learning their definitions :). Maybe even a study mode like Quizlet as well. That way you can learn the words and practice them within the same game :D (the idea is probably a lot harder to implement since you'd need to get the definitions in a language the user can understand... but its a cool idea to think about :P)