Interesting puzzles elegantly packed into a tiny grid :)! To be completely honest, I found it quite hard to wrap my head around the rotations and very often performed a move I didn't intend. I really wonder if there perhaps exists a better mapping to this… I'm thinking something like a wheel around the level which you drag with the mouse, seeing all the rotations happening before you release and confirm? I'm also going to mention it since I don't see anyone else bring it up: while the page says you can use the spacebar only once per level, really nothing is stopping you from doing otherwise :).
Still, this is a very solid game with a well executed art style and a stellar soundtrack. Well done on the entry!