There are 10 races. Human, Dwarf, Gnome, Night Elf, Draini are on the alliance. The other 5 are Orc, Troll, Undead, Turen, and Blood Elf are on the horde. The Horde and Alliance have been fight a never ending war for 10 years. This game is possibly the most successful MMORPG of all time with its 9 million players.