From the introduction:
Cloud Empress is an ecological science-fantasy setting that places you in a world ruled by the patterns of giant magical cicadas. Find a way to thrive, live, and love in the psychic wreckage of Earth, scavenging in the junk of the ancient people who abandoned it.
Cloud Empress is a comprehensive setting, supported by a rulebook, supplemental setting books, and adventure zines.
In Cloud Empress, one player takes the role of the Warden, acting as the voice of the world and the non-player characters (NPCs) who live in it. All other players create characters (PCs) and describe their character’s actions as they go on adventures.
From the itch.io page:
In Cloud Empress: in the land of ten thousand cicadas, players will explore a land governed by the patterns of giant psychic cicadas. When deadly soldiers from royal lands high above the clouds threaten the balance, the Breadbasket's wheat fields will burn without the players' help.