World of Warcraft: Cataclysm is the third expansion pack for the MMORPG World of Warcraft. The evil dragon Deathwing the Destroyer has risen once again, destroying parts of the old world of Azeroth and reshaping most of its surface.
With this expansion, players can now use flying mounts in Azeroth. The level cap has been raised from 80 in Wrath of the Lich King to 85. This expansion also introduces two new races: the Worgen and Goblins. Several other systems have been overhauled, such as new talents, glyphs and changes to existing spells and items. Changes to these systems, as well as the reshaping of the world, apply to all players, whether or not they have upgraded to the new expansion.