Hey thank you for having tried out our little project,
regarding the head growing thing, it started out as a "bug" where the tail would duplicate because if the way I implemented the snake sections, moving the snake would fix the graphical bug so ... yeah I made the snake move when your eat to "hide" this issue.
and the more I played around with it the more I fell in love with how this forces you to think more carefully how you should move.
You might be able to guess what levels were created especially with this new "feature" in mind ;)