Just loved it, II can''t believe how fluid it feels in my Macbook Pro running Windows. The great performance allows a great control using my game pad. I look forward for the harder puzzles and the music. I sense that solving puzzles has a lot of intrinsic value which is cool so no need for extrinsic rewards, wouldn't mind if there are some in the future though XD
I would love to see a bit more of variety in the future if the game gets to be very long but as a short aesthetic experience it's absolutely amazing. Can't wait for the full final version and would also love to see how you did such great optimisation and implementation.