This is great stuff :) One suggestion, when completing a level, automatically highlight the next level on the map to save a key stroke, or accidentally re-entering the same level.
Yup, this is annoying XD. Another thing I'm not too fond/sure about is the color of the menu buttons: darker when selected, brighter when not... Oh, and one bug I've noticed: the counter for completed levels is reset everytime I launch the game until I complete another one (forces the game to recount).
Overall the game is fun and the 58-60 levels were pretty refreshing (loved the music :D).
Thank you both for your comments and nice words!
I need to think about the pre-selection of next level, because currently there is no “next level” immediately when you transition to the map (so there will be some problems with animations/forcing selection unexpectedly), but also I want the player to feel that the progression is not strictly linear and they can skip any level and select another opened level (and for that I need not to force the next level selection)
Also, thanks for reporting the bug :)