Pai Gow is a westernized take on a Chinese version of poker, which originally was actually played with dominos rather than cards. The game is played with 53 card deck which includes a Joker. You play against the dealer and the object of the game is two create the best two poker hands with the seven cards dealt to you.
You play the game against the dealer and begin with placing a bet. The dealer and you are then dealt 7 cards, you choose two of the cards to make a low 2 card poker hand and leave the 5 cards that make your high poker hand. The 5 card hand must always be stronger than your 2 card hand.
When placing the main bet you can also choose to make a Bonus Bet. The Bonus payout is determined by the hand combination of the seven cards dealt, before they are split into your High Hand and Low Hand. If you have a winning hand combination, the win is displayed in a banner with the winning combination and the payout odds.
The hand with 5 cards is ranked as in standard poker except that the A to 5 straight is ranked as the second highest straight you can get. The two card hand can obviously either be a pair or two different cards, so your highest hand here is two aces. The Joker is not a true wild card as it can only be used to complete straights or flushes, and is otherwise counted as an ace. When used in a flush the Joker takes the rank of the highest unused card. Your high and low hands are then compared to the dealers and the highest hand wins.
Your goal is to win both hands. The stronger the hand the greater the win, but even if you win one of the two hands you at least get to win back the amount you bet. So you lose only when you lose both hands.