IGN AU: What did you learn from making Oblivion? What didn't work?

Pete Hines: There's no giant 'we can't ever do that again' stuff. It's more how do we design quests, what kind of choices do we let the player make, how do we account for things we think the player might try and do and anticipate those? So that they're like 'Oh, I wonder what happens when I do this?' And then there's actually something in the game that acknowledges it and takes it into account. And they go 'that's really cool that I got to finish this quest in a really unique way and the game recognised that and gave me a satisfying response.'

In Oblivion the most extreme example is the bandits, who's armour keeps going up and up as you're playing through the game. Suddenly they've got glass armour and amazing weapons. It was an obvious thing that didn't feel right. So we've spent a lot of time on making sure that the player has the ability to go where they want and do what they want, but to also provide them with situations where they're getting in over their head – so they've got to leave and come back. Or they're getting into situations where they're further through the game and their character is really tough and they get in there and they kick ass and feel like a bad ass for a while because they've spent a lot of time buffing up their character.

"What a lightweight. He only had one beer and already he's legless."

We've certainly tried to put more stuff on the screen in front of the player to make the world more believable. The dialogue is much more specific to those characters, as opposed to generic lists of things they can talk about. A lot of it is just tweaking and refining stuff that the player won't even notice. Stuff that we're doing behind the scenes to improve the way the game performs. A lot of it is taking those lessons and learning how to apply them better.

You know, Fallout is a very different game [to Oblivion]. You've gone from swords and melee weapons and one ranged weapon to now where you've got lots and lots of ranged weapons. It almost flips the gameplay balance stuff.