fabric-1.21.9-3.1.0 is a release file of the Minecraft mod MonoLib for Fabric, made for Minecraft 1.21.9. It was published on October 3, 2025 and is 0.1 MB in size. For the full description, screenshots and every other version, visit the MonoLib mod page.
How to install: Put the .jar into the mods folder (.minecraft/mods) and start Minecraft with the matching mod loader profile.
