How come nobody makes these games? (Billiards Edition)

Maybe I've just been missing it, but is there a billiards game that offers a large variety of games?

See the wikipedia entry for billiards:
http://en.wikipedia.org/wiki/Billiards

And you see that while there aren't quite as many variations as there are with cards, it's still a respectable number, and I can see Snooker being a popular third after 8 ball and 9 ball.

The first link that comes up in Google for 'snooker pc' is this:
http://www.gamespot.com/pc/sports/virtualsnooker/
from 1996!

Seems to me there may be interest in a "Hoyle" like billiards compendium.