Developing a Fantasy World: How far do I go? I have recently started to re-write a fantasy novel that I began working on a few years back, but in terms of the world itself, I am a little hazy on some of the details, so I decided to take what I do remember, and rebuild it around that (obviously fitting the characters, major plot points etc). My question is, how much of the world, background, laws, history, rules etc. do I write down and set in stone? And when do I do it? I get worried that if I am too strict on my world then I may run into issues down the line and have a bit of conflict between the plot and the world. So do I iron out the general basics of the world first, write the majority of the book, go back and iron out the rest of the details of world, then go back again and re-write parts of the novel? That doesn't sound like a great idea either. Then there is the issue of geography! Again, I have a good basic idea of the layout of the world (in terms of where the different places are at least) and some basic ideas of mountain ranges and rivers, but do I go into real detail with this? Do I actually sit down and map out the different regions? I'm really struggling to work out how to go about this right now haha!