nightmare-b1.0.0-neoforge-1.21.1.jar is a beta file of the Minecraft mod Nightmare (The Shadow) for NeoForge, made for Minecraft 1.21.1. It was published on May 25, 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 Nightmare (The Shadow) mod page.
How to install: Put the .jar into the mods folder (.minecraft/mods) and start Minecraft with the matching mod loader profile.
