Basic.zip is a release file of the Minecraft resource pack MC Basic, made for Minecraft 1.12.2. It was published on April 7, 2019 and is 4.4 MB in size. For the full description, screenshots and every other version, visit the MC Basic resource pack page.
How to install: Put the .zip into .minecraft/resourcepacks (do not extract it) and enable it under Options → Resource Packs.
