master_of_machinery-1.unfinished or something idk-forge-1.20.1.jar is a beta file of the Minecraft mod Master of Machinery for Forge, made for Minecraft 1.20.1. It was published on February 23, 2025 and is 5 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 Master of Machinery mod page.
How to install: Put the .jar into the mods folder (.minecraft/mods) and start Minecraft with the matching mod loader profile.