The Wagadu Chronicles is a 5th Edition compatible fantasy setting deriving strong influence from African history and folklore. It details the land of Wagadu, which people are "born into" by falling from the Upper World and are taken in by nearby communities or spirits to start new lives in this new world. History is marked in Cycles of said beings coming down in irregular 'showers,' where the land itself and natural laws themselves can change as a reflection of rising influence of spirit families.
Twin Drums Studio released a 200+ page free PDF detailing this new world. It outlines the setting and also contains an adventure, Child & Oath, and a bestiary of creatures!
Disclaimer: I am not affiliated with Twin Drums Studios. I've been following their work for a while and am a fan.