What's unique: A player is awarded points every time he makes a play that results in the open ends of the tiles in the line of play adding up to a multiple of 3.

The tiles not drawn are pushed to one side to make up the boneyard.
Set: Lots are drawn to determine who sets the first tile. The first player may play any domino in his hand. After the first tile has been set, play continues to the left. The first double played is a spinner.

Scoring: A player is awarded points every time he makes a play that results in the open ends of the tiles in the line of play adding up to a multiple of 3. (3 points for 3 pips; 6 points for 6 pips; 9 points for 9 pips; and so on.) The player who dominoes is also awarded points at the end of each hand by adding up, and rounding to the nearest multiple of 3, the pips on the tiles left in his opponents' hands. 1 pip is worth nothing; 2, 3, and 4 is worth 3 points; 5, 6, and 7 is worth 6 points; and so on. The first player, or partnership if 4 are playing, to reach 200 points wins the game.

      Variations: 1) The first player to reach 150 points wins the game. 2) First to reach 250 points wins the game. 3) A player is awarded one point every time he makes a play that results in the open ends of the tiles in the line of play adding up to a multiple of 3. (1 point for 3 pips; 2 points for 6 pips; 3 points for 9 pips; and so on.) The player who dominoes is also awarded points-one point for each multiple of 3-at the end of each hand by adding up, and rounding to the nearest multiple of 3, the pips on the tiles left in his opponents' hands. The first player, or partnership if 4 are playing, to reach exactly 61 points wins the game. If any play made causes the player's or partnership's total score to exceed 61 points, then...