Social skills are competencies that a person has in dealing with the environment and people around him so as to achieve maximum development. Good social skills are one of the most important competencies in the stages of human development because when dealing with other people will involve communication skills, thinking skills, and many other abilities. When at school there are children who are still silent and do not play with other friends, when other classmates play toys together, children do not come with their friends and during learning activities in class children also rarely talk or play with friends. When the new child arrives at school with his parents, the child is enthusiastic when greeting the teacher. But after being abandoned by his parents, the child began to cry alone. In this research, the type of literature study is used or often also known as literature review. The sources of data in this study are journals, research reports, scientific magazines, newspapers, books, seminar results and so on that have relevance to the research topic. Traditional engklek games can stimulate children's social skills, because when children play engklek games, children can indirectly interact with other friends. When playing the game, children can laugh happily with other children so that children's social skills will develop by playing traditional engklek games.