Severed Fane asked for a 'small campaign bible' for my current campaign, City of Spires, which shares a setting with my previous Team Tsathogga campaign. This campaign world started as a kitchen-sink-y science fantasy setting, suitable for running short, casual games over beer with players new to D&D. To my utter astonishment, I'm still running games set in the same world six years later, and it has now accumulated a staggering level of background lore.