The levels in this game were chocked full of "ah-ha!" moments for me, as any good puzzle game should have. The interpretation of the theme was very unique but fits perfectly and just works great as a primary puzzle mechanic.
Overall, the game felt very polished. The animated eyes on the different amalga-mates and in the background was a great, though subtle, detail.
The only problems I had were some text going slightly off the screen and the controls being a bit finicky (like I kept hitting spacebar to jump instead of W and was very confused).