pixelpaw_s_back_to_nostalgia_25w36b.zip is a release file of the Minecraft resource pack PixelPaw's Back To Nostalgia Pack, made for Minecraft 1.21.9-snapshot. It was published on September 7, 2025 and is 18.4 MB in size. For the full description, screenshots and every other version, visit the PixelPaw's Back To Nostalgia Pack resource pack page.
How to install: Put the .zip into .minecraft/resourcepacks (do not extract it) and enable it under Options → Resource Packs.