What other worlds do you have?

[Rynn]

Who here worldbuilds for something other than OA? Me I've always loved worldbuilding, long before I realised there was a name for it. OA is the only collab project I'm a part of (and the biggest world given its age and teamwork). But I have a few solo projects too. Each one has its own file on my computer, some I've spent a long time on, others were a quick exploration of one idea that didn't go much beyond that. My main solo efforts are a fantasy world based on economics of magic and a soft(ish) SF world. I've also played round with a super hero story and have started on a new fantasy setting based on multiple magic systems trying to coexist.

How about you guys