I love this! Very beautiful and fun to play.
Really liked the opening text display. Adding a sfx during the typing might add to it.
All the pixel art looks really nice and the white on black adds a nice style. The emitter effect on the block while the player is next to it or moving was a nice touch. I was getting some line flickering but outside of that the art was great.
I also enjoyed the mechanics of moving the block. You could have the original location of the block sparkle after it's moved as a place to allow the user to reset the block to prevent soft locks.
Very well done. Keep up the great work! :)