Begin by drawing 7 domino tiles each for a two-player game. Put the first tile on the board to start the domino chain. Switch placing tiles to either end of the chain, checking that the matching numbers meet. Gain points by forming multiples of 3 at the ends of the chain. Figure out your score by totaling the numbers on the ends of the domino chain after each move. Continue playing until one player has no more of tiles or no more moves are possible. The player with the highest score at the end is the champion.