Finally a game where the actions affect the story!

To RPG enthusiasts, is THE game for you: huge life (the first time playing cool without much take care of side quests I put 60 hours at the end and there I again and I'm 60 hours as game and barely half the game is made), the actions you take have a real impact on the course of events (try to put you back to one of your companions drive and let you go or he will not obey the orders you give it!). No offense to some, this game is well above an Oblivion because there finally there is a history and more it changes depending on what you are or what you do! Also the PC version of this game has graphics that consoles do not and for once the "real" gamers are finally rewarded.
My advice to good advantage of this game: try all the character creation possibilities (about ten at present) and especially try to think in the game real person and you will see some options open to you among others with your companions.
For the rest, it is true that the zone changes are somewhat boring and limited a little exploration of the area but since the surface is the area in which you operate would have been difficult for programmers to create a map as large without asking a lot of information to store huge and therefore unmanageable for most computers.
In conclusion, buy, and enjoy this wonderful role play!
And do not go comparing it to Baldur's Gate! The only common point between these games is the editor.