BlueBlackRed said:
I'll take whatever extra info you're willing to throw at me (figuratively or literally - your choice).
From the little I've read, It's going to be a slimy & nasty place. A place where dried out Jello flops off the wall if disturbed & the floors are coated with a variety of bubbling muck, slime, and that stuff my wife made for dinner yesterday. A constant stream of disgusting creatures lurk in the passages waiting for a convenient meal.
...I think it had lemon & chicken in it...
Partially, but I took more than a few pages from Lovecraft and Howard when writing up I - specifically, the themes of magic corrupts and disease. Unnatural vigor.
Region I is a sick place; it is diseased. From the random bits of flesh that scream or crawl along the walls, to the existence of Madness and Anguish, everything in I is hideously, unnaturally
alive. As a Region, it doesn't consciously hate, but malevolence powered by some very nasty sorcery has transformed the Region into what could almost be a living thing; the literal belly of the beast. Aside from the obvious physical dangers involved, there's a very good reason that undead don't venture into I - the positive energy coursing through the place is anathema...and unlike the positive energy PCs are likely to be used to, it's entirely out of control, dangerous at its best and deadly at its worst.
Just as importantly, I is a Region in absolute chaos, in decay even as it constantly regenerates itself. Insanity is the order of the day - a particularly nasty GM could, for example, twist the corridors around a bit, as the Halls of Flesh reshape themselves. Say, during the PCs' flight from some threat or another.
I'll do some digging, and see if I can find a creature I cut myself from the write-up - a sort of anti-undead, a corpse animated purely by the rampant positive energy of the Halls, akin to the 'runner' zombies of the new
Dawn of the Dead.
Another suggestion, since I'm thinking on it - when Arioch appears, just have him seem to have two arms. It helps maintain the fun and mystery a bit better.