This was a challenging little puzzle game with nice level designs. I especially liked the one where you combine the blocks to make a key shape in order to collect the keys. The isometric view made the controls a bit challenging, as I'd often move in the opposite direction of where I'd think I should be moving. I think you could keep the isometric perspective by, for example, clicking on the next space to move. But overall this was a fun puzzle game that I enjoyed playing!
By the way, we played your game on our stream last night!