Nice game!

This is a terrific game overall.

The gameplay is the best thing about it. Every puzzle is carefully thought out.

Unlike what some others have said, I do not believe that this game should be reduced in difficulty; the challenge is perfect as it is and NONE of the levels are impossible (all of them together are beatable within a few hours).

My only major quip would be the music, which sounds fine but is very repetitive as there is only one song that plays.

Overall, however, I really enjoyed this game. Nice job!