left and right arrow keys to navigate the worm.
game ends when your score becomes 250,000 or you run
into the wall. You have to eat as many food pieces (little
colored squares) as possible. Occasionally bonus fruits
will appear. Their life is short, so you have to be
fast to eat them. As you eat more and more food pieces,
the game speed and the length of the worm increase as
well. Remember, if the worm touches one of the walls
or its own body, the game is over. Good luck!