NC-ReactorBuilder-1.12.2-1.0.3g.jar is a beta file of the Minecraft mod NuclearCraft Reactor Builder for Forge, made for Minecraft 1.12.2. It was published on April 6, 2023 and is 0.5 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 NuclearCraft Reactor Builder mod page.
How to install: Put the .jar into the mods folder (.minecraft/mods) and start Minecraft with the matching mod loader profile.
