Snooker is played for points
In Snooker, they are playing for points, the reds are 1 point, and the colored have different points. You always shoot a red and then a colored, after all the reds are sunk("potted"), then you "pot" the colors, (i believe in point order.) The colors get spotted after they are sunk, until the reds are finished. I believe the 147 is a "perfect" game. I don't play snooker, I could be wrong, but this is what I've seen on youtube.
A perfect game is a run of 15 reds, 15 colored's, and the remaining colored's.
Ronnie O'Sullivan is a snooker player. Those are British Stat's.