World of Warcraft
World of Warcraft is the biggest and the most successful MMORPG. The game continues the story of World of Warcraft III : The Frozen Throne. After the big war in Azeroth, the habitants will fight now to get Azeroth free of the Dead Legion.
World of Warcraft has got two Addons, The Burning Crusade and the new one, which will be released in the next mounths, The wrath of the Lich King.
You can create your own character and after that you can explore the world of Azeroth. You can choose a character out from 10 different fractions and customize it, until it looks like your imagination. You can do a lot of things while traveling azeroth. You can do a lot of interesting quests, or you can only walk around and kill a lot of monsters. When you search a good group you can go to the deep and dangerous dungeons, where you can find more mighty enemies and theys will give you a lot of interesting items to pick up.
World of Warcraft is not a game, which you will play only a few hours or weeks. World of Warcraft has got a very hight long term motivation. Because of that you have to take care of yourself, because WoW will make you addicted to play it.