Simple Dominoes - it free is an app for Dominoes fans! With it, you can have endless fun whenever and wherever you want. Simple Dominoes has 2 different modes. Choose your favorite Dominoes mode: Draw Dominoes and Pass Dominoes.
A domino is a small tile that represents the roll of two dice. The tile, commonly called a bone, is rectangular with a line down the center. Each end of the tile contains a number. In the most popular domino set, the double-six, the numbers vary from 0 (or blank) to 6. This produces 28 unique tiles, as shown in the diagram on the right.

A common domino size is about 2 inches long, 1 inch wide, and 3/8 inch thick - small enough to be held comfortably in the hand, but large enough to be easily manipulated, and thick enough to be able to be stood on edge.