ArcBuilder - 1.20.0 is a release file of the Minecraft mod ArcBuilder for Fabric, made for Minecraft 1.20. It was published on February 12, 2026 and is 2 MB in size. For the full description, screenshots and every other version, visit the ArcBuilder mod page.
How to install: Put the .jar into the mods folder (.minecraft/mods) and start Minecraft with the matching mod loader profile.
