In the card game Dupli, each player starts with the nine cards in hand. On a turn, you each choose and reveal two cards, then carry out the effects of those cards, which have a rock/paper/scissors style of ranking, along with potential reversals of powers. More than one person can win a round, and the winners split the cards played, with the remainder carrying over to the next round. After four rounds, whoever has won the most cards wins. You can play Dupli with fixed hands of nine cards so that everyone has the same options available or by adjusting the card count in the deck based on the number of players, then shuffling and dealing nine cards to each player.