The world is a busy, messy, turbulent place. Creating a world of your own will involve just as much in terms of philosophy, religion, politics, and more. But many GMs find it hard to figure out how all that stuff should work. That's where Ethnographic References comes in. It's a handy e-book supplement that gives you information on how to integrate all sorts of extra lore and realism into your games. The book is up on Indiegogo now.