What would the algorithm be for generating/drawing the asteroid shapes from the original Asteroids game? Is it even an algorithm? Or would they be hard coded shapes?
Here is a screenshot to jog your memory.
Screenshot from Asteroids game http://www.heinzwerner.de/emu_asteroids.jpg
EDIT - Also found this:
alt text http://www.next-gen.biz/files/images/feature_article/2009/05/asteroids4.jpg
from the article Edge - The Making of Asteroids. Interesting read, but does not mention any specifics.