Which company was this American game designer who designed the set of Planescape Campaign Setting employed for more than a decade?
David Cook (game designer) David "Zeb" Cook is an American game designer, best known for his work at TSR, Inc., where he was employed for over fifteen years.
Brian Sullivan (game designer) Brian Sullivan is a computer game designer and entrepreneur known for developing "Titan Quest" and the "Age of Empires" series of games. He is also the co-founder of "Iron Lore Entertainment" and "Ensemble Studios". Brian won the 1998 Computer Game Developers Association (GDC) Spotlight Award for Achievement in Game Design for his work on "Age of Empires".