hard_mode-1.0.0-forge-1.20.1.jar is a release file of the Minecraft mod Ultra Hard Difficulty for NeoForge, Forge, made for Minecraft 1.20.1. It was published on August 13, 2024 and is 0 MB in size. For the full description, screenshots and every other version, visit the Ultra Hard Difficulty mod page.
How to install: Put the .jar into the mods folder (.minecraft/mods) and start Minecraft with the matching mod loader profile.