Dominoes is a family of games using the "Western" style tiles. The standard set of tiles is based on the 21 different combinations made with a roll of two six-sided dice. Seven (7) additional "Blank" combination tiles combine with the 21 to form the standard 28 "Double-Six" set. "Double-Nine" (with 55 tiles) and "Double-Twelve" (with 91 tiles) are also popular ("Double-Fifteen" sets also exist).
There are many different games played with Dominoes. The standard game is known as the Block game. Forms of this game are known in many different areas of the world with similar rules. Puerto Rican Dominoes, Latin Dominoes, and Cuban Dominoes are all forms of the Block game.