There’s an entire subculture of fantasy map-making and world-building, because Tolkein and Gygax together hammered into the genre of epic fantasy literature and gaming the need for a world to have an all-encompassing backstory, including a theogyny.
I’ve been farting around with a fantasy world of my own devising, known as Cevalon, since I was about 14. I’ve even written a novel set in that universe, which I still find interesting, and may, with some extensive editing, see the light of day. More likely, the first novel of that series will be set several thousand years before that. Because I’ve got backstory. I’ve even got the theogyny. It’s a riff off the Hindu Trimurti, with a Mother/Creator Goddess, a Protector God of Craft and Knowledge, and a Destroyer God of Fire and Renewal. There’s a bit of family drama between them, and the Destroyer God is that touch more Satanic, but…
Some of the stories I’ve written for Unnamed Journal, the Tygg and Drea stories — The Dying Goddess, The Barbarian on the Shore, and most recently The Sword in the Cave — are set in this universe. They take place on the periphery, so I’ve kind of expanded the geography of the world. This is as it should be.
For my birthday I got a How-To guide for drawing fantasy maps, which has inspired me to go back to my old maps and kind of rejuvenate them. This has been in my mind for a while, but I will enjoy nerding out all over it.
I think that’s the trick.