You've got core gamers on Xbox, but you very rarely get casual PC gamers with a 3D card. If you've gone out and bought a 3D card you're usually a core gamer, just because of the cost - a good 3D card these days costs the same as an Xbox.
Eurogamer: The Witcher 2 arrives on the same day as Fable III. Isn't that a game for PC gamers?
Mike West: I don't see the same people who play The Witcher as playing Fable, and the other way around. The Witcher 1 was quite a dark game with a lot of blood and bits flying about, whereas Fable is very friendly and happy and funny - it's a fun, relaxing time. I loved Fallout 3 on the Xbox, but I couldn't play it for more than a few hours because everything was brown and grey and rusty and there was a nuclear war. It was a great game, but every now and then you just got depressed.
In future games we're going to have difficulty levels for everyone on every machine, but this time we wanted to give PC gamers something more challenging. We've upped the difficulty level; we've stopped the player's health regenerating all the time - the player has less basic health, the AI attacks more often. It's tweaks.