
Blizzard Entertainment president Johanna Fries is also kind of gobsmacked at how World of Warcraft has been chugging along for two whole decades, but she's also aware that the evergreen MMO has been so unrelentingly consistent because Blizzard developers have struck the right balance between fresh and familiar additions.
"You want to retain the players who have been with you going on 20 years in some cases," Fries says in an interview with Windows Central after her first year on the job. "They have a certain set of expectations. Taking World of Warcraft as an example, you can't have every expansion being such a 'zag' that it feels totally unfamiliar to your core fanbase."