Thoroughly enjoyed this game! Whilst it took me longer than I expected to get the hang of the gameplay, I found myself very intrigued to repeat the gameloop, learning new things along the way - similar to @poliasgames, I didn't realize I could move things around until I accidentally right-clicked. After learning a few "hidden" mechanics like this, game play improved immensely for me.
Great job in packing this level of game logic and game play into such a little game!