This is an online/Game Center multiple players poker game. Also this game is a good mathematical/educational game for teacher or parent to train children's math skill by playing game. To play the multiplayers game features, the game player must log in Game Center. And the multiple players feature can support up to 4 players playing online poker game. The goal is to add, subtract, multiply and divide the face value of each card to reach player preset points which could be 24 or 21.