i like these sorts of games, because they make you use your brain for a change! haha.
the concept was good, and this game can keep any one with half a brain entertained for quite a while... well, i did get bored once i got to level 11, and i found that one to be a little difficult, so i stopped there :P.
but some very nice work. i liked how the game was presented, and how you could choose from many different things such as levels, sound volume, the ability to mute the sound, etc. a very good little game.
overall score: 6/10
(THE THUMB: UP)