one_block-1.0.0-forge-1.20.1.jar is a beta file of the Minecraft mod Just One Block for Forge, made for Minecraft 1.20.1. It was published on April 9, 2026 and is 0.1 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 Just One Block mod page.
How to install: Put the .jar into the mods folder (.minecraft/mods) and start Minecraft with the matching mod loader profile.
