1.12.9-1.21.1-neo is a release file of the Minecraft mod Spectrum for NeoForge, made for Minecraft 1.21.1. It was published on September 30, 2026 and is 95 MB in size. For the full description, screenshots and every other version, visit the Spectrum mod page.
How to install: Put the .jar into the mods folder (.minecraft/mods) and start Minecraft with the matching mod loader profile.
