World of Warcraft (WoW) is a massively multiplayer online role-playing game developed and published by Blizzard Entertainment in 2004. The game is praised for taking traditional RPG elements and implementing them in a way that both hardcore and casual gamers can understand and enjoy. WoW is famous for its ease in leveling and recovering from deaths, which allows players to quickly catch up to friends who may have been playing for a longer period of time. WoW was the best-selling PC game of 2005 and 2006, and as of 2013, it possesses more than 10 million subscribers worldwide.