Beautiful game! I love how simple, small and smart it is. Sharp idea with clever execution, where you clearly show some ideas but don't mind exploring them to their deepest possibilities, but surely suggests that they exist.
I love the transitions, the colors, the movements and simplicity of shapes. The idea of creating the interface in a tilted angle that follows the alignment of the camera is also pretty neat.
The only concern I have is that in games such as sokoban I really feel like I should be able to input movement as fast as thoughts. - just like in chess. In that sense, animation speed and lack of input queue takes a bit of that sauce that the game could have had.
Simple, beautiful and elegant!