Enjoyment: Loved it. The "Aha" moments of figuring out how the different tracks work, and realizing that I needed to use track 1 to reduce jump height to get through level 3, etc, just awesome. Clever level design really carried through.
Concept: You married the theme and limitation nicely, and exceeded the premise well through tight mechanics, juice, level design
Presentation: Just wow. The background, the sound visualization, the dropman itself, the character animation, the text, the start screen-- this is a BEAUTIFUL game.
Use of limitation: Cleverly merges theme and limitation in a way that plays well with thestory and world.
Overall, excellent work!