Weak RPG, rather an action/adventure/shooter game. A dumbed down Elder Scrolls aiming at the largest audience's wallet.

User Rating: 6.9 | The Elder Scrolls IV: Oblivion PC
If you are not a RPG player, and you enjoy action and console games, you will certainly love this game. But please, don't misunderstand Oblivion for a real Role-Playing game. I have read comments like "greatest RPG ever". And I say, no! You can't mean such a thing, it's completely untrue. It's possible you find Oblivion the greatest game ever (and in this case I encourage you to try some other games less flashy, but with more depth. Your opinion about Obl. may change soon). But Oblivion is certainly very weak in many areas, and doesn't stand to the same level as Morrowind.

IMPORTANT: The level scaling, meaning that the whole world levels up with you, is a terrible blow on the head of the Elder Scrolls series. It dumbs down the game, removes all excitement and purpose from the game-play, and pushes Oblivion away from the Role-Playing class.
It's clear that this game has been made with a sole purpose in mind : to reach an audience larger than the Role-Playing community. I guess it is a success for the company, finding so few reviews from RPGists, mostly angry and stunned with disappointment. Rare bad scores lost among a crowd of praising reviews from less demanding gamers, easily dazed by the flashy but weak and boring Oblivion. Personally, during the many hours I invested in this game, I spent most of my time time trying to figure out why I was feeling so bored, rather than enjoying it .