Cribbage.

About Cribbage

Cribbage, sometimes called cribbage pool, fifteen points and pair pool, is a two-player game that, like its namesake card game, has a scoring system which awards points for pairing groups of balls that total 15. Played on a standard pool table, participants who pocket a ball of a particular number are required to immediately pocket the companion ball that tallies to 15 when added to the prior ball's number. Each pair so pocketed counts as a cribbage; there are seven such pairs, and the 15 ball counts as an eighth by itself after all of the others have been pocketed. The first player to score five cribbages wins the game.