You may feel responsibility for your own success or satisfaction. Many times, entertaining ourselves stems from being neglected by others, so we dream of playing alone and enjoying ourselves in spite of them. Other times, it is a product of distancing ourselves from others, even if perhaps they would want us to play in the group.
Do you feel a sense of loneliness or comfort in the dream?
Dreaming of playing with others can be a symptom of your need to enhance your interpersonal communication skills. It can also inform you of the possibility that you have been neglecting communion with others, and that you need to seek more camaraderie in your life.
Was the game in the dream for fun or competition?