Abydion, the Fifth City
The Abydion setting was inspired fairly directly by Clark Ashton Smith’s Xothique stories and the Hyperborea setting as presented in the Astonishing Swordsmen & Sorcerers of Hyperborea RPG, with additional influences from the works of H.P. Lovecraft and Robert E. Howard, plus what I’ve heard about Jack Vance’s Dying Earth and Michael Moorcock’s Elric (both of which I really need to get around to reading for myself). There are also some obvious parallels to the Numenera RPG, but I want to avoid its stance that, even if you use it to build a “fantasy” world, all the magic is really just tech that isn’t understood – I’m going for a “weird fiction” vibe here, from a time before there was a recognized division between “fantasy” and “science fiction”.
Additionally, shortly after starting work on Abydion, I discovered Tékumel, which plays with a lot of the same ideas as I am. While I’m not sold on it sufficiently to switch over to using the Tékumel setting instead of Abydion, much of my work has come to be influenced by (or outright stolen from) Tékumel and related RPGs.