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 II: Tides of Darkness
In 1999 Blizzard published the "Warcraft II: Battle.net Edition" for Windows and Mac, which combined the original game and the expansion pack, retained the Macintosh facilities and replaced the DOS version with a Windows version that included Blizzard's online service, Battle.net, for multiplayer games. After considering new content, Blizzard preferred to make it easy for new and older fans to play each other. "Battle.net Edition" included some user interface enhancements from "StarCraft" – a hot key to center on events, assigning numbers to groups of units, and double-clicking to select all units of a type. However they excluded production queues and waypoints.