World of Warcraft: Wrath of the Lich King

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This expansion pack for a massively multiplayer online role-playing game continues the conflict between the Alliance and Horde factions. Players explore the frozen continent of Northrend, completing quests, battling the undead Scourge, and confronting the Lich King as part of the narrative-driven campaign. The expansion introduces new character classes, a hero class, and a dungeon system called the "Instance LFG tool."

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