The first thing I noticed when playing this game was the music. It fits it very well. However, that assumes it's supposed to be peaceful. I am unsure of what your vision was, but regardless I think it needs more challenge. Something to make the player have to take risk. Like a time limit, a money limit, or only a certain number of blocks. I like the minimalist art it was a good choice for a game jam. Good job making the red indicator for when it couldn't be placed. Over all nice little game!