It's called Age of Conan, Hyborian Adventures, and it's a Massively Multiplayer Online game.

It's similar to games like Everquest in that there is a massive 3-d world chuck full of quests and loot and equipment that you create a charactor and run off into, in search of. Age of conan has got to have the greatest graphics i've ever seen in any MMO before...and it's unique in that it's player vs player. You can fight any other player you see in the world, and it's the goriest mmo ever. FUNNNNNN

You can buy it at..probably any video game store. it's one of the biggest sellers of the year.