Start by selecting 7 domino tiles each for a two-player game. Put the first tile on the board to begin the domino chain. Take turns placing tiles to either end of the chain, ensuring that the same numbers connect. Score points by making multiples of 3 at the ends of the chain. Figure out your score by adding the numbers on the ends of the domino chain after each move. Proceed playing until one player exhausts of tiles or no more moves are possible. The one with the highest score at the end claims victory.