Minecraft Underground Hardcore.zip is a beta file of the Minecraft map Reds Underground Challenge, made for Minecraft 1.16.5. It was published on June 3, 2021 and is 3 MB in size. Pre-release builds can contain bugs — back up your world before installing. For the full description, screenshots and every other version, visit the Reds Underground Challenge map page.
How to install: Extract the .zip and move the world folder into .minecraft/saves; the map then appears in your Singleplayer list.
