» Sat May 28, 2011 4:49 am
The freedom.
The lore.
The sheer volume of time you can invest in the game, making it one of the best values available per dollar spent.
The immersion. It can literally become an alternative life.
The replayability, which ties into my third point.
The modability (pc only).
And, in my humble opinion, it has some of the best game mechanics (collectively) than any other game I've played.