Ok, wow, just wow, this one left me speechless.
The puzzle aspect may not be for everyone, and I almost gave up on solving the first one, but I powered through and after that, this ended up to be the best TWO WHOLE HOURS (gamejam game!) of my week.
This is an experience you should have for yourself, so it's a little hard to write a review. I will be trying to keep things spoiler-free.
What I will say though, the way everything blends together is gorgeous. You always get a double reward for solving a puzzle, both the gratification from solving the puzzle itself, as well as the newly acquired ability/change in the environment that completely changes either the way you play or the world around you. The only exception to this is the last puzzle, since you can't play the game any more after solving the last puzzle. :(
While the graphics may be a little lacking, they are not the main focus and even so, the world feels varied, has sub-areas and succeeds to be pleasing to the eye towards the end. And every other aspect of the game is nearly perfected, especially the level design and the puzzle design.
The sound design is very pretty as well. Background music and the SFX fits the game perfectly..
If you're still reading and aren't the developer, GO PLAY THE GAME! And if you are the developer, thank you so much for making this!