Starting Nibbles opens
the main window shown below.
Nibbles Introduction Window.
To start the game, select GameNew Game.
When the game starts, the snake will come out of the left side of the
screen.  You use the up arrow to make the direction of the snake go up.
Use the right arrow to turn the snake right, left arrow to turn the snake
left, and down arrow to turn the snake down.
Nibbles During Gameplay.
