Dominoes is a family of games played with rectangular "domino" tiles.

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 (also called pips, nips, or dobs) or is blank.

The backs of the dominoes in a set are indistinguishable, either blank or having some common design.

The domino gaming pieces (colloquially nicknamed bones, cards, tiles, tickets, stones, chips, or spinners) make up a domino set, sometimes called a deck or pack.

The traditional Sino-European domino set consists of 28 dominoes, featuring all combinations of spot counts between zero and six.

A domino set is a generic gaming device, similar to playing cards or dice, in that a variety of games can be played with a set.