Wrath of the Lich King Pre-Release: 2007-2008.Some of World of Warcraft's past faction leaders strike a pose. With the release of its seventh expansion, Battle for Azeroth, WoW still boasts a thriving fanbase. World of Warcraft has sold millions of copies, made billions of dollars, and won hundreds of awards. It didn't define the massively-multiplayer online role-playing game (MMORPG) genre, but continues to evolve with it. For 14 years, World of Warcraft has remained not only active, but relevant.