The predominant form of play for preschool children, in which children play modeling the actions and relationships of adults. The role of an adult, which is assumed by the child, involves following certain, often implicit rules, due to which both the performance of actions with objects and relationships with other children who are included in the group game are regulated. Due to the emergence of strong emotional experiences associated with the content of the role itself, with the quality of its performance by all participants in the game, with the implementation of the general plot, the experience of the game has a very significant impact on the development of the child’s personality. In its context, the formation of the most important new formations of this period of childhood takes place: the mastery of the sign-symbolic function, the development of imagination, the formation of elements of voluntary control over behavior.