World of Warcraft: Game info
World of Warcraft is what's known as a massively multiplayer online role-playing game (MMORPG) that allows thousands of players to adventure across the game world together at the same time.
To date it's one of the most popular PC games of all time and at its peak had more than 12 million paying monthly subscribers.
Players can join a PvE (player versus environment server), or a PvP (player versus player) or RP (role-playing) server.
Its eSports tournaments usually focus on 3v3 arena battles.
Explore the world of Azeroth, a place of never-ending adventure and action. Experience epic stories and quests. Face deadly dragons, find mythical artifacts, or just visit a nice, quiet corner of the world to do some fishing.
Pledge allegiance to one of two warring factions, the Alliance or the Horde. Join or create a hand-picked group or guild of adventurers like yourself, and take on Azeroth's foes as one of twelve uniqueclassesand 13 races. Level up and amass power at your own pace.
Meet your foes on the battlefield, and bring your friends to join the war effort! Compete in unique Battlegrounds with set objectives, or fight to the bitter end for glory and honor in the Arena.
Typical game length: 10mins
Price: £9.99 (plus £9.99 per month, and around £34.99 for the latest expansion pack), or free up to level 20
Publisher: Blizzard Entertainment
Notable tournaments: WoW Arena World Championship
Popularity: 5.5m as of Q3 2015 (though Blizzard says it has risen since then but won't quote specific numbers)
Twitch: 18.7m hours watched in October 2016 across all viewers
Pegi age rating: 12
Other Pegi info: Realistic looking violence towards non human looking characters, non-realistic looking violence towards human characters, mild bad language, violence causing minor injury only.