Spectrum March 25, 2025 is a beta file of the Minecraft shader Spectrum Shaders, made for Minecraft 1.21, 1.20.2, 1.21.8, 1.20.5, 1.21.5, 1.21.4, 1.20.1, 1.20, 1.20.6, 1.21.1, 1.21.6, 1.21.3 and more. It was published on July 25, 2025 and is 51.6 MB in size. Pre-release builds can contain bugs — back up your world before installing. For the full description, screenshots and every other version, visit the Spectrum Shaders 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.
