Edward CastronovaIf you've never been to this conference or E3, the first thing that impresses you is the scale. Gigantic and global. I still have trouble grasping how big the business of designing play has become. This talk is by the CEO of Kongregate. It's about retaining players for the long run. She reminds us that games like EverQuest are still making money after a decade. Time scales are bigger than you realize too.