It may seem like sort of a waste of time to play World of Warcraft with your son. But you're actually interacting with each other. You're solving problems. They may seem like simple problems, but you're solving them. You're posed with challenges that you have to overcome. You're on a quest to gain certain capabilities. I haven't spent a lot of time playing World of Warcraft, because my impression is that it takes a serious amount of time to play it well.