The puzzles are all very well designed. However, the presentation does needs some works, it's relatively easy to trigger a collision bug where the blocks you are currently controlling gets stuck inside another yellow block and you are just stuck in place.
The ending zone's colors are way too low in contrast that it's really hard to see what shapes does it want. The way the camera works is... odd. I would much prefer to have a camera that actually moves around and can zoom in/out, because it's really hard to see the whole level at once when you're trying to solve the puzzle. I like the WASD indicator on the block, but if the camera are just stationary at 4 angles, not sure why you can't just rotate the controls as well.
Thanks for the game.