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".
World of Warcraft
"World of Warcraft" has inspired two board games: "" (including "Shadow of War" and "The Burning Crusade" expansions) and "World of Warcraft: The Adventure Game", produced by Fantasy Flight Games. There is also a trading card game, and a collectible miniatures game on the market, both formerly produced by Upper Deck Entertainment, now produced by Cryptozoic Entertainment. Cryptozoic released an "Archives" set which contains foil reproductions of older cards produced by Upper Deck. In August 2012, Megabloks launched a licensed line of World of Warcraft 'building block' toys based on the game scenes, scenarios and characters. In March 2014, "" was released, which is a free-to-play digital card game based on the Warcraft universe, using classes similar to World of Warcraft.