2025r6 is a release file of the Minecraft resource pack Classic Faithful 32x, made for Minecraft 1.21.5. It was published on April 24, 2025 and is 11 MB in size. For the full description, screenshots and every other version, visit the Classic Faithful 32x resource pack page.
How to install: Put the .zip into .minecraft/resourcepacks (do not extract it) and enable it under Options → Resource Packs.