Prequel?

[DanteDMC]

I just thought of something. Since penumbra's premise is based on finding out why and what Phillip's father has sealed up, there's a huge potential for a prequel that can narrate the story from Phillip's father's point of view....well considering that all goes very well for the game and gets support from publishers. What do you guy's think? And what ideas do you have in terms of story, gameplay, and enemies?