Players last visited Northrend in Warcraft III: The Frozen Throne, when Arthas Menethil fused with the spirit of Ner’zhul to become the Lich King, one of the most powerful beings in the Warcraft universe. He now broods atop the Frozen Throne deep in Icecrown Citadel, clutching the rune blade Frostmourne and marshaling the undead armies of the Scourge. In Wrath of the Lich King, the forces of the Alliance and the Horde will venture into battle against the Scourge amid Northrend’s howling winds and fields of jagged ice.

With the opening of the Dark Portal, and the renewed war to stop the Burning Crusade’s destruction of worlds, the heroes of Azeroth have given little thought to the frozen wastes of Northrend - and the terrible, ancient powers that wait there. Yet the brooding evils of the fallen Nerubian empire and their malevolent sovereign have not forgotten Azeroth…

The former death knight and now Lich King Arthas has set in motion events that could lead to the extinction of all life in Azeroth, as his undead armies and the necromantic power of the plague threaten to sweep across the land. Only the mightiest heroes can survive the frozen northlands with any hope of disrupting the plans of Arthas - and perhaps even challenge the Lich King himself and end his reign of terror for all time.

New features include:

• Death Knight Hero Class: Create a high-level Death Knight character - the game’s first hero class - once certain challenges have been met.
• Increased Level Cap: Advance to level 80 and gain potent new talents and abilities along the way.
• Northrend: Explore the harsh new continent of Northrend, packed with new zones, quests, dungeons, monsters, and items - and do battle with the undead armies of the Lich King.
• “Inscription” Profession: Learn this exciting new profession and gain unique ways to permanently enhance spells and abilities in the game.
• Siege Weapons and Destructible Buildings: Take the battle to another level with new player-vs.-player game mechanics and new battlefields to wage war on.
• New Character Customization: Change how characters look and express themselves, with different hairstyles and dance animations.