Use left and right arrow keys to navigate the worm. The 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!