Make believe, also known as pretend play, is a loosely structured form of play that generally includes role-play, object substitution and nonliteral behaviour.
Children engage in make believe for a number of reasons. It provides the child with a safe setting to express fears and desires. When children participate in pretend play, they are integrating and strengthening previously acquired knowledge.
Children who have better pre-tense and fantasy abilities also show better social competence, cognitive capabilities, and an ability to take the perspective of others.
Pretend may or may not include action, depending on whether the child chooses to project their imagination onto reality or not.