uskb.zip is a release file of the Minecraft map ultimateskyblock, made for Minecraft 1.12.2. It was published on November 23, 2018 and is 3.4 MB in size. For the full description, screenshots and every other version, visit the ultimateskyblock map page.
How to install: Extract the .zip and move the world folder into .minecraft/saves; the map then appears in your Singleplayer list.
