PSX Shader NB 1.0 is a release file of the Minecraft shader PSX Shader NB, made for Minecraft 1.17.1, 1.21, 1.18.1, 1.16.5, 1.19.3, 1.20.2, 1.19.4, 1.21.8, 1.17, 1.20.5, 1.21.5, 1.18 and more. It was published on April 11, 2025 and is 0 MB in size. For the full description, screenshots and every other version, visit the PSX Shader NB shader page.
How to install: Put the .zip into .minecraft/shaderpacks (do not extract it) and select it under Options → Video Settings → Shader Packs. Needs Iris or OptiFine.