I've worked out that one of the games is like that, yeah. But there's 8-ball and 9-ball too. I've never played them, though I hear that they are big in the US.
8 ball and 9 ball are quite popular here in North America. The rules vary somewhat depending if you're playing bar rules or league rules.
In a nut shell:
8 ball:-- someone breaks. The solid colour balls are 1-7 (low) and the striped balls are 9-15 (high). The first person to sink a ball becomes either low or high depending on what ball it was that they sunk (i.e. if you sink a striped (high) ball the rest of the stripes (high balls) become yours, and vice versa).
-- Once all that is determined you try to sink all of your own balls before your opponent sinks theirs.
-- The 8 ball (black) is the last one you shoot for. Generally you have to call this shot (bar or league) and if you scratch (sink the cue ball) while shooting the 8 ball you lose. Be careful!
9 ball: This game is fun.
-- In this game the balls 1 to 9 are racked in numerical sequence in a diamond starting with the 9 ball in the middle.
-- The purpose of this ball is to sink the 9 ball as soon as possible. You basically just go from 1 to 9. If you don't hit the lowest ball on the table before any of the others it's a scratch and your opponent has "ball in hand", meaning they can put the white ball wherever they want. You don't have to wait to sink all the balls before sinking the 9;
however, you always
must hit the lowest ball first before hitting the 9. For example, if the 3 ball is the lowest number on the table you must hit that ball first. So you can combo the 3 into the 9 to sink the 9 and win the game. Oh and you don't have to call your shots in this game.
Sorry for the confusing instructions. lol