Warcraft
In 2004, Blizzard Entertainment moved the series away from the real-time strategy genre and released "World of Warcraft", a massively multiplayer online role-playing game (MMORPG). Requiring a subscription fee to be paid to play, it also introduced regular additional content to the series in the form of patches. "World of Warcraft" gained popularity worldwide, becoming the world's largest subscription-based MMORPG in 2008. The game reached a peak 12 million subscribers worldwide in October 2010. "World of Warcraft" has had seven expansions as of 2018. During the production of "", Blizzard co-founder Frank Pearce stated that "If there's a team that's passionate about doing another "Warcraft" [real-time strategy], then that's definitely something we would consider. It's nothing that we're working on right now, we have development teams working on "", "", "Diablo III", and when those teams are all off the projects they're working on, they'll be intimately involved in the discussions about what's next".
Warcraft III: The Frozen Throne
Warcraft III: The Frozen Throne is the expansion pack for "", a real-time strategy video game by Blizzard Entertainment. It was released worldwide on July 1, 2003 for Microsoft Windows and Mac OS X. "The Frozen Throne" builds upon the story of "Reign of Chaos" and depicts the events after the main game's conclusion. The single-player unfolds from the perspective of two new protagonists—the Night Elf warden Maiev Shadowsong and the Blood Elf prince Kael'Thas—as well as returning protagonist Arthas Menethil. Additionally, the expansion contains Act I of a separate Orc campaign that is independent from the main storyline with Blizzard releasing Acts II and III via patch in December 2003, taking in player feedback of Act I when developing these chapters.