World of Warcraft
Massively multiplayer online role-playing game in the Warcraft world where you can play on the Alliance or the Horde side. Each side has four races you can choose to be and there is a total of nine classes to pick from. You get to do quest on your own and with other players as you explore the two continents of the world. Great game and real easy to get into ( harder to get out of :) ). I have played my human mage almost all the time.