Pai Gow Poker rules bring together games from two countries - the US and China. Rules of Pai Gow, a Chinese dominoes game in which players have to gamble, and poker, a US card-room game have been included in Pai Gow Poker. The game requires the use of a standard deck of 52 cards and an additional Joker. You can use the additional Joker in place of an ace, or to make a flush or straight.