1.1.3b-mc1.21.10 is a release file of the Minecraft mod The Copperier Age: Copperier Copper for Fabric, Quilt, made for Minecraft 1.21.10. It was published on July 17, 2026 and is 4.3 MB in size. For the full description, screenshots and every other version, visit the The Copperier Age: Copperier Copper mod page.
How to install: Put the .jar into the mods folder (.minecraft/mods) and start Minecraft with the matching mod loader profile.
