Neat game! The core puzzle mechanics are solid and the game has a very nice art style. I think there should be a delay before you start moving when you push the fire block because I ran into it a couple times, or maybe just don't spawn a flame there at all. I also found myself only using the normal blocks because the rune ones weren't necessary and less convenient to get to.
I'd like to see more levels rather than just a single looping one! I would have played longer if that was the case.