Yuki wrote:http://archive.videogamesdaily.com/features/konami_interview_sep04.aspKikizo: One of the first things I wanted to ask was about the origins of the concept for Silent Hill 4, the idea of this apartment with a tunnel to an alternate world of horrors - what inspired this idea?
Tsuboyama: We wanted to make a sequel after Silent Hill 3 and you could say that was the initial concept, but upon that we needed to implement a lot of new flavour to the sequel, otherwise it would have been the same old Silent Hill. So for that, we created "The Room" as the concept for the game, so that we could use to represent the contrast between the normal and the abnormal life which changes suddenly. For the scenario we got our general influence from a book called Coin Locker Babies, which was written by a Japanese writer called Ryu Murakami. It talks about a baby abandoned in a coin locker. That was the general background.
It has always been a Silent Hill game.
That's a good interview, thanks for the link!