This is such a great example of a simple and obvious idea being pushed into something far beyond. Gameplay is challenging yet well balanced and the game is fun to play with tight controls. It is honestly impressive how well the elements work together considering how simple each one is. And good job with that snake AI, it actually does what you want it to.
If there are any future updates planned in my opinion separate stages or at least some form of checkpoints would be nice, whilst the "tutorial" is well done, replaying it does get a little old after the fifth time.