Here is the link to a talk from Maxis Creative Director Stone Librande who made one game for his kids every year in the last 15 years. He shows the games, explains his design goals and foremost, the design lessions learned from making this games and playing them with his kids.
A highly recommended talk for people, who want to peek into the art and craft of making games. There are good lessions also for game design veterans, for example, that items could be as important as goals.
