The aesthetics - visuals and sound - are perfect together. The premise is great, I just wish the puzzles started sooner! I think it wasn't until stage 8 that I had to use my brain.
Oh, you should know there's a glitch that you can pretty much unlock all the levels if after you solve the first stage you hit Enter when the level select shows up. It brought back to the first level, and when I completed it, I unlocked the third level, then the 4th, 5th, etc. You gotta watch out for those cheaters, like me!