grid where a player is or not

zoom out with higher score

use socket.io for send updates -- only send changes to rhe user (not if a snake grows and her tail is stoped) -- only send players interaktion snd let the client make busines logig

endless map: the user doesnt see a boarder

the snake grows if she hit a piece of food with his head

there are different kind of foods: -- smaler/bigger (less/more points/growing) --

a player dies if the snakes head hit his own body or another snake

if a layer dies she left a piece of food

player logs in before playing? facebook/oauth

different food for the snake

different style of the game (retro/rainbowcolor/modern)