such as the zones you can visit and the quests you can accomplish, are also organized by faction. Some quests can only be completed by Horde players and others can only be completed by Alliance players. Some zones offer cities and interactive NPCs for one faction, but are completely hostile to the other.

The Horde side includes the orc , tauren , troll , and undead races, while the Alliance side includes dwarves , gnomes , humans , and night elves . All classes are equally well-represented on both sides, with the exception of the shaman and paladin classes. Shaman can only be played by Horde players, and Paladins are exclusive to the Alliance side.