I've always enjoyed a well developed world, when I look at things like "Volo's Guide to Monsters" that came out last November I get really excited because I know it's gonna be full of various info such as how these creatures multiply and adapt their environments. It goes in depth about things such as allies and enemies, how and what they eat, etc. Some friends and I have spent over two years creating a world together with timelines, history, various races and orders and calamities and it's just a lot of fun to me. So I'm thinking and I'm curious about the methods other people use. What's your method of worldbuilding?