For a "Hello World" game, this is really nice. The music is absolutely beautiful, the graphics are interesting and pique my interest, and the "Freedom..." ending is very bittersweet (thanks to the music and fade-out), which is great. As most other people have said, more achievements or secrets would be great, if you ever come back to this game and refine it.
The controls can be a little stiff, though, and the magnets can be tedious to work with sometimes, but those aren't big complains, although it would be nice if they were touched up and polished. Very nice work, and A+ for the Yume Nikki reference.