v1.2a is a release file of the Minecraft data pack But the Floor Changes Every Day, made for Minecraft 1.21, 1.20.2, 1.21.8, 1.20.5, 1.21.5, 1.21.4, 1.20.6, 1.21.1, 1.21.6, 1.21.3, 1.21.7, 1.20.4 and more. It was published on July 18, 2026 and is 0.6 MB in size. For the full description, screenshots and every other version, visit the But the Floor Changes Every Day data pack page.
How to install: Put the .zip into the datapacks folder of your world (.minecraft/saves/<world>/datapacks) and run /reload. No mods needed.