It doesn't matter if you use 9 or 15 balls, if you use 9 the 1st player to sink 5 wins if 15 1st player to 8 wins. It is a call ball & pocket game with 1 exception; only 1 ball clean banks count. So you can't "combo bank", play off another ball, carom bank or the like you must contact 1 ball 1st...