The 17th Domino I did a little research on Milania's  "17" domino on the Christmas tree. Dominos with "17" on them are manufactured, but it took an interesting dig for the details. I did not know this, but unlike cards and standard board games, there is not one standard set of dominos. The number of dominos in a set varies depending on the desired number of players and the type of game being played. To find a "17" domino you have to get one of the largest types of sets manufactured. A 190 piece "double-18" set. It has tiles with numbers 0 - 18, which includes the 17 tile. That size of set is frequently used for a domino game called "Mexican Train Dominos". That in and of itself is a bit of a troll! Bottom line, selecting the 17 domino was deliberate.