We can define the game as an activity of psychical or physical order thought to entertain and unproductive in the short term. The game entails expenditure of energy and material means, without creating any new wealth. Most people who engage in it derive only pleasure, although some may gain material benefits. As a result, Johan Huizinga notes that many human activities can be equated with games. The difficulty of circumscribing the definition of the game represents an interest for philosophy.

It is easier to list the games. These are usually characterized by a name and rules that can be classified by type. The sciences of education and human development, the cognitive sciences, pedagogy examine play as an infant practice, important for learning and education, which can make it productive in the medium and long term. In the game, the young human, like that of other species, realizes without vital issue of the acts that will be necessary to him in his adult life.

However, continues to play, and frequently applies the concept of play to activities that he does not conceive as purely entertaining. This is the question what game do you play? The sociology and psychology of human interaction, establish, one and the other, the relationship between set games, such as sports, and conventions, often implicit, that govern the life of society and feelings of the individuals up. This extension of the concept of play gives in economics the theory of games.

The word game comes from the Latin word jocus meaning joke or banter, which also gave French toy. By metonymy, we call game all the playing cards, and by extension, any assortment or set. In computer science, we have data sets. Game can also mean the personal way of playing a game or playing an instrument.