World of Warcraft conducts maintenance every Tuesday, but rarely for such a lengthy period. At least 28 game servers were scheduled to be offline for at least 24 hours, according to an advisory from Blizzard. “We realize that this is inconvenient; however, this downtime is necessary to address the recent issues adversely affecting performance for players on these realms,” the message noted. “All World of Warcraft players on these realms will receive a one-day time extension for the downtime caused by this maintenance.” Last week the maintenance window was also expended while game publisher Blizzard Entertainment investigated a possible exploit in the game.

World of Warcraft is a massively multiplayer online role-playing game (MMORPG) based on Blizzard’s Warcraft series depicting a war between four races with magical abilities and distinctive weapons.