Adults may worry that such play will become aggressive, and they should probably monitor it. Older children's more logical and socialized ways of thinking make it possible for them to play games together. The main organizing element in game play consists of explicit rules which guide children's group behavior. Game play is very organized in comparison to sociodramatic play. Games usually involve two or more sides, competition, and agreed-upon criteria for determining a winner.
Children use games flexibly to meet social and intellectual needs.
For example, choosing sides may affirm friendship and a pecking order. Games provide children with shared activities and goals. They can learn reasoning strategies and skills from strategy games like checkers. In these games, children must consider at the same time both offensive alternatives and the need for defense. Many card games encourage awareness of mathematics and of the psychology of opponents.