20200428world.zip is a release file of the Minecraft map fashishi discord server map ~1.16.X, made for Minecraft 1.15.2. It was published on April 28, 2020 and is 441.6 MB in size. For the full description, screenshots and every other version, visit the fashishi discord server map ~1.16.X map page.
How to install: Extract the .zip and move the world folder into .minecraft/saves; the map then appears in your Singleplayer list.