This game is conceptually fascinating. The music and sound design compliments the game very well -- combined with the low stakes and how you can take your time to organize things the best you can, it evokes a sort of zen. I'd also like to compliment the scoring system -- it's intuitive, interesting, and rewards the player for making the right choices without punishing them too harshly.
If there's one critique I have, it's that the game gives the player a lot of freedom in the placement and orientation of objects, and the orientation never factors into the scoring system. I think that neatly ordered constructions should score more highly than a mess of related objects placed in the same area -- although I understand that would be difficult to program. Good work overall!