Instead of 3 chips which are lost one at a time, losers pay a higher amount and are knocked out immediately. This yields a faster game. To cancel this advantage, when only two players are left the second player can't look at his card until after the first player has chosen to exchange or hold. Top card of the deck is flipped over, and the suit of the flipped card becomes the trump suit for the hand. Players secretly put a chip in their fist if they want to stay in, or form an empty fist if they don't.
Players open their fists simultaneously.
Boo Ray is a trick-taking game. All other players do the same in turn. If they can, players must play a card of the same suit as the card which began the trick. If a player has no cards of that suit, he may play any card. The highest card of the led suit takes the trick, unless a card of the trump suit is played in which case the highest trump card wins the trick.