Depends what the ‘game’ is. Whatever we ‘play’ at in a dream might just be fun or suggest great seriousness. As humans we use an enormous number of strategies to gain our ends, as explained in the book Games People Play. So play in a dream can depict a sense of relaxation; a way of practising something without responsibility; not taking something seriously. Also: A game can be a way of playing creatively, exploring feelings, ideas and approaches in a safe way before trying them out in life. This sort of self allowing, of letting oneself ‘want’ something without too much serious overtones, can be very creative and the beginning of new developments in life.