On November 23, 2004, the gates of Azeroth opened to legions of adventurers. Since then, World of Warcraft has become an industry phenomenon, claiming over 11 million players worldwide. In celebration of its four-year anniversary, Blizzard is offering World of Warcraft gamers who log into the game a special treat -- a "Feat of Strength" and a non-combat baby polar bear pet.This is matched by the stir around the non-combat pet, long considered a prestige item in WoW. The baby polar pet matches a sort of "bear theme" with special brown bear mounts available to players in the city of Dalaran and white bear mounts with a murloc on the front being given away as a special prize at Blizzcon 2008.

One of the most-praised additions to World of Warcraft since the launch of Wrath of the Lich King has been the game's achievements system, in which players get points for performing certain actions in the game. "Feats of Strength" are special achievements that are attached to special events and have no point value because they are usually not repeated.