Like the other guy, liked the music but alas, the game kept on crashing between levels. Farthest I made it was level 3 on a lucky go. Can’t really judge how well the game’s mechanics play based on those first three levels, as they were simple introductory levels, but it did seem like they could lend to a fun puzzle game. And especially with that nice BGM, a fixed version of the game would probably be quite enjoyable.
If you don’t mind some additional criticisms: the camera movement would feel better if it rotated around the puzzle, and some indication as to when one block is blocking another would be nice, otherwise it just seems as if that’s however far a box can go. Also, sometimes clicking on the player box would not register.
Good job in any case. As I said, with the crashes fixed this does look like it’d be quite enjoyable.