Thanks for the links.
This one...
https://en.wikipedia.org/wiki/Eight-ball
By far the most popular game in Australia. Most of our Pubs have tables and we used to wrack them up like this.
Just after it was released down here I heard a girl complaining about "The color of money".
She didn't enjoy the movie because she didn't understand the game.
I would argue you don't really need to understand the game to enjoy the movie. (9 ball is very rare down here)
It's one of my all time favourite movies.