MFFS 1.21.1-5.4.44 is a release file of the Minecraft mod Modular Force Field Systems (MFFS) for NeoForge, made for Minecraft 1.21.1. It was published on July 26, 2026 and is 3.2 MB in size. For the full description, screenshots and every other version, visit the Modular Force Field Systems (MFFS) mod page.
How to install: Put the .jar into the mods folder (.minecraft/mods) and start Minecraft with the matching mod loader profile.
