Collaborative world building is a process by which students learn to think critically about social forces at play in a given place at a specific moment in history and how these forces influence the lived experiences of the people who live in the world. Students write a metanarrative describing the governance, economics, social values, and cultural influences and then populate a wiki with entries for people, places, and things and pin them to a map. Collaborative world building is useful for creative projects such as creating post-apocalyptic futures, alternate histories, or fanfiction in preexisting worlds and could be used in courses in literature, history, or other humanities. Participants will learn about the pedagogical theories underlying collaborative world building including its roots in role-playing games and will participate in the creation of a brand new world of their choosing.