To far from a true fallout!
I have been waiting this game for over 10 years, and the only thing that i see it's a game with a lame speechs, they take the same questions and repeat it over and over again, then the gameplay it's fun for the firsts15-20 hours then it's more of the same don't have any feedback. After that we have a world when you are continuously push it in subways because the invisible walls, or the unscalable rubble of the surface can't let you go anywhere else (issue that I tought have been fixed for all modern games ).
The IA have no sense mutants firing over 2 miles with a minigun (obviously they don't hit anything) and in other cases just stand in front of you thinking what can they do. For the other hand you with some good perks like sniper, commando or finesse and a decent weapon like the sniper rifle or lincoln repeater can pass through the whole game without any problem (what happen with the rooms full of monster when you need almost a miracle to leave alive). After that we have a karma system that the only remarkable consequence on the trayectory of the game that has it's being persuit for some pathetics guys call it "regulators", and make you evil for steal things when no one see you.
now to end let's talk about the side-quests that are just a try from bathesda to make the game a little more deep in comparation of a decadent ,careless of imagination, main story of 20 hours about looking for your dad and when you find it all the game its over :S then you are kicked again to the main menu, what about taking revenge for you father dead or help the brotherhood fight against the enclave,or the opposite,etc.
This game have a lot of potential but doesn't deserve the name of Fallout 3 it's just another shoot em up with some good adds.