Undermagic II

The pack expands progression with five unique weapons, including swords, spears and bows that cover projectile and melee playstyles, along with a new armor set that has its own properties. Players reach these items through expanded progression, where diamond sidegrades and new vanilla boss drops sit beside the Demon General fight. Structures called Demonic Keeps appear in the Nether and house the fearsome Demons that guard them.

The boss battle against Maxon is meant to be challenging and fair, and its difficulty follows the world difficulty setting. In-game guidance comes from the Demonomicon, a book that players obtain on first entering the Nether and read for instructions. The pack is inspired by the Calamity Mod and re-imagines the original 2019 early release state of the project, with much more content in both new and returning forms.

Undermagic II is a datapack, so it is distributed for Fabric, Forge, NeoForge and Quilt loaders as well as data pack use, with a single build, 1.0.1+mod, targeting 1.21.11. It is released under the MIT License and is not open source. Most textures are by Ragno, and the pack uses the Smithed Crafter library and rx Nexus, among others. The server must run it, while a client can leave it out, so either side can join without the pack being installed on the other.