While there are many forms of play, children go through four developmental stages of play. Knowing your child's developmental stage of play can help you incorporate solo play in a way that is comfortable to them. They are Solitary Play where children play alone, not paying attention to anyone else, Parallel Play where a child plays alongside another child but isn't engaging with them, Associative Play where children are doing the same activity but not working together, and Cooperative Play where children are working together doing the same activity or game.