http://www.grumpiesbilliardtables.com/carom-billiards.htm
Carom games
The carom game is played on a table with no pockets. There are two variations, both are played with three balls, a white ball, a red ball and a white ball with a red spot. Not my favorite past time, but I have been known to past the time at a friends house with these games. So long as I have a cold drink in my hand.
The game known as French billiards allows a player to decide on which one of the two white balls he will use as his cue ball. The player must then make the cue ball hit the other two balls.
In 3 cushion billiards your cue ball must hit multiple cushions at least 3 times prior to making contact with the object balls. (I really don't play this game that often, and I do not know all that much about it, but I thought I would add it anyways)