In recent years, that philosophy has created a WoW world where decade-old game tropes coexist alongside quests with current sensibilities. Blizzard Entertainment never launched a World of Warcraft II it just kept iterating on the original. After 15 years, it still dominates massively multiplayer online RPGs in Western gaming, and people keep playing it.
World of Warcraft occupies a unique place in the gaming world. Blizzard Entertainment must make a sometimes poorly aging game feel relevant and new again - while still remaining true to what people love.