This is an ingenuous puzzle game. The direction is clear, you can easily tell what the puzzle is trying to accomplish and it does it well. It reminds me of a recent release on XBox call "ilomilo" One of my favorite aspects I found in here is the feeling of finding a new way of solving the puzzle.
Two things to improve: Add a hint system (I got stuck on "Binary Sudoku" Also make it so the player can see themselves hitting the final square. It sounds small but it makes a huge difference to the feel of I solved it!
I really like this game, I think it will be something I will always end up coming back to play every now and again, also the music and background are very relaxing and calming. You did a really good job ^^