Koroush is at it again: the Prey demo was only just released to the public, & he's already got a tweak guide posted. I guess that's the kind of prompt attention one needs if you're going to run a site called TweakGuides, right?

"Although Prey is firmly based around a modified Doom 3 engine, and as such much of my current Doom 3 Tweak Guide applies to the game, the in-game settings are sufficiently numerous and different to warrant clear explanation and screenshot comparisons..."