The basic gameplay is finally complete. I will add some tweak to the difficulty settings and probably little more challenges before posting final version.

The gameplay is simple. Scoring by collecting/eating the fruits to grow up. Obviously, the more you collect, the worse it is. Sometimes, a "pill" will show up and will remove a tail part if you pick it up.
The wall dosen't "kill you" but make you bounce. Be carefull of the angle, because if your head touch the tail, you lose.
The Game Over screen is done with final score.
I started to make some graphic tweaking. The biggest part will be to create and replace the snake/caterpillar model and the basic environement (plants, rocks, ...)
Here is a little GIF:
https://puu.sh/yyCjf/a17fc63f3a.gif (~5mb)