You can go to the link below for all the details, but the gist is this little yellow pie-shaped dude slides his way along these channels gobbling up all kinds of other ghost-like critters and seems to get more energy the more he eats (and you control that little dude) and then if you eat all you can before time's up, you get to have another go and try to eat some more. That kid's got some appetite, I gotta say. Lotsa fun. Classic game from the days when Corey Hart and Red Rider were popular. Must have for anyone that likes video games.