Dominoes is a family of tile-based games played with gaming pieces, commonly known as dominoes.
Each domino is a rectangular tile with a line dividing its face into two square ends.
Each end is marked with a number of spots or is blank.
The backs of the tiles in a set are indistinguishable, either blank or having some common design.
The gaming pieces make up a domino set, sometimes called a deck or pack.
The traditional European domino set consists of 28 tiles.