Fusion is a Minecraft mod (for 1.12.2 exclusively) that is designed as a tool set for far superior adventure maps than possible with vanilla. It's also possible to use Fusion for scripted roleplays, and, to some extent, in Minecraft machinimas. Fusion is a fork for Mappet. Original Mappet is licensed under the MIT License (see LICENSE_MAPPET.md). Fusion is distributed under the GNU General Public License v3.0 (see LICANSE_FUSION.txt).
Unless otherwise stated, all source files in this repository are covered by the terms of the GPL v3.
Install Minecraft Forge, download the latest stable version of jar file for available Minecraft version. Also install following mods: McLib, Metamorph, and Blockbuster. Put it in minecraft's mods folder, and launch the game.
After that, Fusion mod should be installed and will appear in Minecraft's mods menu. If Fusion didn't appear in the mods menu, then something went wrong.