Hopefully he'll pick up some awesome hobby like saving the world from alien invasions or something. Happy birthday.
To make a new generic game and finally make the entire console industry a crock of !@#$%? Nothx.
I hope for his birthday he has a sit down, a glass of wine with his wife, and appreciates the item his wife has given him. I also hope the chocolates his children inevitably bought him taste good.
As for a new hobby, I think he should learn to fly planes. Just like when he learnt swimming and made some of the most atmospheric water levels ever in Mario 64, he could do the same for flying. A superior Pilot Wings, perhaps.