Whizbang Dustyboots said:
It's been well over a decade since I read the Gord the Rogue books. Remind an old man of how Gygaxian planar cosmology differs from the post-Planescape cosmology, please.
Lemme think:
1. All the daemons, hags, other NE and LE fiends, and devils wanted to serve Tharizdun and his servant Nerull (also called Infestix), seeing this route as the best way for them to maintain their power in Tharizdun's new cosmic order. The demons were fractious and mostly independent, though some allied with Nerull's camp.
2. There were a bunch of new creatures invented for the books (dreggals, maelvis, etc.), but they were poorly described if at all.
3. There were some new planes invented and inserted here and there as the plot required, including a staircase that stretched between many different planes.
4. There was an additional planar axis. In addition to Astral/Ethereal, Good/Evil, and Law/Chaos, there was the dimension of Probability, which corresponded to Technology/Magic. This axis is one of the things that distinguishes the parallel material planes from one another.
5. There were an infinite number of parallel material planes in the same cosmology, as in 1e and pre-Spelljammer 2e.
6. Graz'zt is part of entire race of demons that look more or less like him. Called the abat-dolor, these fiends are more humanlike in temperment than most natives of the Abyss, though still evil. I don't actually hate this idea nearly as much as I intimated earlier (there's nothing particularly wrong with it, but I prefer Graz'zt as mostly unique except perhaps for a few siblings).
7. The short story "The Weird Occurance in Odd Alley" from Gygax's book
Night Arrant introduces an extradimensional city of portals that connects to thousands of parallel material planes as well as the outer and inner planes. I'll be damned if it isn't nigh-indistinguishable from Planescape's city of Sigil, though it's much less well-developed.
8. Lower planar creatures in general tend to be stupid, short-sighted bullies, rather than clever and far-sighted as they often are in Planescape. The big, almost unique exception is Vuron, Graz'zt's demonic vizir. Graz'zt admits that without Vuron he wouldn't be nearly as successful.
9. The hierarchs of daemonkind are generally disposable cannon-fodder in Gygax's multiverse, excepting Infestix himself. In Planescape, every ultroloth and arcanaloth is a criminal mastermind. Some of the greatest villains in the Gygaxaverse are human, putting the fiends to shame, while Planescape put great emphasis on the prowess of the immortal, unthinkably ancient fiends.
10. The lords of neutrality in the Gygaxaverse are of mixed race, including humans, the Cat Lord, and the King of the Plane of Shadow. Planescape instead has an outsider race called the rilmani, an inscrutable group equivalent to the fiends and celestials.
11. In the Gygaxaverse, Baphomet is an archdevil instead of an archdemon (according to "Evening Odds," the Gord story from White Wolf's
Pawn of Chaos anthology).