Nothing wrong with hours and hours of the video games when it is warranted. I just caved on the World of Warcraft deal. He will be busy for hours.
My almost 15 year old son and all of his friends are so addicted to this game. Last night my son had a friend over to spend the night. They both came in the living room with "that look". You know the one that you know they want something? Well, he said to me, "Mom, we can win $200,000 playing in a WOW tournament. You just have to loan us $20 bucks each. I said "loan", you don't have a job how will I be repaid? He looked at me with those big baby blues and said "I will do anything you ask me to do around here" please mom. If I win, I will buy you a beach house. I said "ok, where do I sign up". Not that $200,000 would buy much of a beach house, but I bet I could get a condo.

Anyway, I am a gambler at heart, and needless to say I caved. So, in six weeks I will let you all know if I get to buy a condo at the beach.
I will tell you this, I have kids over here every weekend, and all they do is play WOW. I would much rather them be here than running the streets.
I am so sorry about your sons arm. Wishing him well.