The game is very fluid, and difficulty progresses smoothly + the AI makes the situations interesting as you have to interpret the snake's movements. Like an infiltration/race game ^^
Maybe it could be interesting to have some FX on the snake's head to know it's specific states if there is some? (like "now I'm rushing toward you", "now rushing toward a non-player fruit", "now just roaming with no specific target").
Well done!