I finished the whole thing :O
Strongest point is clearly the game mechanic + the music.
Excellent fading in/out of the background music and volume adjustment done depending on the level and the level of activity happening on-screen. Where can I find the background music? I don't think it was up on your website. 10/10
The game mechanic is just original, big props to that :D I'm sick of defense games and platformers that don't depart much from Super Mario Bros. by now 10/10
The only thing I would love is more plot. I'm not denying that there is a plot, however it is very loose and in some senses sparse. For example there would be many levels which provide very little in terms of story, where the only goal was to reach the door. In these levels the only goal is the puzzle and there were few details which contributed anything significant (a dead tree there, some more ground here). It seemed most of the development occurred in the last few levels of the game, which I didn't mind but also didn't love. 8/10
on a side note I wish there were more of those black orbs, they were horribly frustrating but extremely fun to play around with.