Dominoes (also referred to as bones, pieces, men, or tiles) are small rectangular blocks used for various games. They are usually twice as long as wide, and have a line down the center to divide them visually into two squares called ends. They may have a number of spots, or pips, on each end or be blank.

A domino is similar to dice and playing cards in that each tile represents a number of numbers from one to six, depending on its value. However, a domino has no suit like a set of cards or dice. Moreover, it is possible to have many different suits and no matches.

Most domino sets are made from plastics, polymers, and resins; others are made of ceramic clay or frosted glass or crystal. Some are made of natural materials such as stone, wood, or metals.

They are available in sets of various sizes, with the most common being “double six” sets that have 28 tiles, and “double nine” sets that have 55 tiles. Larger sets can be used for games that require more pieces or for longer domino games.

These sets are typically sold to players as a kit for play and can be purchased from most stores that sell gaming goods. Some sets have a single domino for every possible combination of numbers, while others have several dominoes that represent different combinations.

Some sets have a variety of different designs, and some are printed with a pattern. These designs can be more difficult to read and are often a challenge for beginner players.

Traditionally, dominoes were made from bone, silver lip ocean pearl oyster shell (MOP), ivory, or a dark hardwood such as ebony. These sets were often painted or inlaid with a contrasting color to distinguish them from one another.

The popularity of dominoes led to the creation of many variants. Some of these are based on traditional Chinese game sets, while other variants have been created in Europe and the United States.

Some dominoes are used for specific games; for example, the most popular variant is “5s-and-3s,” a scoring game in which players attach a domino from their hand to one end of those already played so that the sum of the “ends” is divisible by five or three. Other games that can be played with dominoes include layout and blocking games.

In some variants, the doubles are also played as spinners and can be used to switch the line of play in a game. They can also be used in a variety of other ways, such as to add a spinner-like element to a board game.

They are also used in a variety of other entertainment activities, such as gambling, or as a decorative object. In some cultures, they are worn as jewelry.

In the United States, dominoes are commonly used for entertainment and as a way to pass time. Some people enjoy playing them with friends. They are also a common item for weddings and other events. Some individuals even play them on a daily basis.