RCG-64x-update 18.zip is a release file of the Minecraft resource pack RCG Realistic (64x to 1024x) TexturePacks, made for Minecraft 1.21.5. It was published on May 16, 2025 and is 27.1 MB in size. For the full description, screenshots and every other version, visit the RCG Realistic (64x to 1024x) TexturePacks resource pack page.
How to install: Put the .zip into .minecraft/resourcepacks (do not extract it) and enable it under Options → Resource Packs.