I'm currently working on/nearing completion of a mod that features Heaven vs. Hell. I don't have a good name yet. It's equally inspired by good ol' Revelations, as well as my interest in syncretic religion and media like
Supernatural. It's got a lot of angel and demon units, but I've also tried to keep as many Civ3 units in it as possible (basically, I'm challenging myself to creatively implement pre-existing units).
Here's an IMGUR folder of some screenies:
https://imgur.com/a/sLrEY
Do tell me what you all think. I've had a lot of fun writing Civilopedia entries, and I'm pretty excited to get it goin'!