A great addition to the series.
The Elder Scrolls series has always been hailed for its open-ended gameplay and lush, vibrant, lore filled worlds, which are almost unparalleled in the gaming world. Oblivion holds true to that, and while it doesnt take it any further, the gameplay makes a better overall game.
Oblivion holds true to the Elder Scrolls lore, although it does not add huge amounts of history and religion like Morrowind did, it adds enough to keep a lorebuff satisfied. There are hundreds of books to read, including ones on the Daedra and the other gods of Tamriel.
The sound in Oblivion is amazing. Like its predecessor Morrowind, Oblivion features a lovely music score of slow exploration music, fast paced battle music, and an amazing title theme. It would have been nice to have had a few music scores for the special occasions throughout quest lines though.
The gameplay in Oblivion improves upon Morrowinds by leaps and bounds. Although not the best in the world, Oblivions battle system is solid and fun enough, espesally for an adventure RPG.
Oblivion is a game that any RPG fan should have, and if their computer cant run it they should try one of the earlier Elder Scrolls games.