This is a very simple game for Adafruit's Hallowing M0 Express board,
demonstrating use of the new displayio mode from CircuitPython 4.0.
To play, you have to make sure you have flashed at least version 4.0 beta 5
of the CircuitPython firmware. Then just copy the main.py file over to
the CIRCUITPY drive, and enjoy. Touch the teeth to steer the snake, and try
to eat as many apples as you can without biting yourself.