I don't usually disagree with game critics when it comes to bad games, but I had to disagree with them when it came to Two Worlds [http://en.wikipedia.org/wiki/Two_Worlds_%28video_game%29], probably best known as "that-one-game-that-tries-to-be-Oblivion-and-fails."
I'll admit, the game has zero originality, boring visuals, broken mechanics, and one of the worst user-interfaces ever to grace a video game; but I'll be darned if it wasn't really fun to play. I found that what it lacked in polish, it made up with it's vast amount of content and the freedom it gave players; it pretty much let you do anything you wanted to.
If I had to summarize it, Two Worlds is essentially the video game equivalent of a B-Movie, a shameless imitation that can occasionally end up being more fun than the thing it's trying to emulate. And, like most B-Movies, it got a sequel, and from what I've heard from friends, it's just as fun as the first game.