Players last visited Northrend in Warcraft III: The Frozen Throne, when Arthas Menethil fused with the spirit of Nerzhul 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 Northrends howling winds and fields of jagged ice.

Death Knight Hero Class: Create a high-level Death Knight character - the games 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.