4/5 Fun game, but need a challenging aspect like being about to die and possibly a scoring system for high scores. Those two things alone would give it a lot of replay value.
I gave it a 3/5. It has some major glitches that should be fixed (can't eat horizontally and sometimes no "food" shows up so you get stuck doing nothing). Not so bad for a first though! Keep up the work and you'll get better!