necoarcmod-2.1-neoforge-1.21.8.jar is a release file of the Minecraft mod Neco Arc Modification for NeoForge, made for Minecraft 1.21.8. It was published on January 11, 2026 and is 5 MB in size. For the full description, screenshots and every other version, visit the Neco Arc Modification mod page.
How to install: Put the .jar into the mods folder (.minecraft/mods) and start Minecraft with the matching mod loader profile.
