"To build all this variety of gameplay elements and features into Alone in the Dark we built our own technology. There is a full R&D department working on the tool we use at Eden... it's an in-house tool called Twilight 2.Nothing fantastic, but it's always interesting to see the tools that different game developers use to produce their games.
The interesting thing about Twilight 2 is it's the same tool we used for Test Drive Unlimited. It was so flexible that with updates on it we can make all that we need for Alone in the Dark."
GameSpy: Alone in the Dark Developer Diary #3