This is a project, started all the way back in 2018, that aims to document every secondary-world fantasy planet ever created (i.e., every planet that isn't Earth or part of a Milky Way setting). The objective is to provide a searchable database of worlds, arranged in terms of the pieces of media they appear in (e.g., books, movies, TV shows, video games), as well as some in-world information regarding number of moons or the length of a day, if available. A secondary objective is to provide a map of each world, provided one exists, in a visual gallery. The database currently has around 500 entries, and an early version will be made available in the next few months.