Neat puzzle game!
Core mechanic is very interesting and original. I kind of understood how it worked intuitively, although I got stuck on Level 11 in the end. Controls are well thought out, I found it easy to put my plans into motion.
Presentation is very nice, really liked the background effect you created. Could maybe do with a couple of Sound Effects, although the music does create a nice vibe.
Overall, very strong submission. Good job!