Take a note that this is an alpha build of the mod. There is still a lot to be done, but the core functionality is there (Item Registration and Ore Generation). You can find the progress of the port, and planned features for 1.21.1 in this project.
Addons will be ported when the base mod is fully functional, and the addon system reworked.
Take a note that this is an alpha build of the mod. There is still a lot to be done, but the core functionality is there (Item Registration and Ore Generation). You can find the progress of the port, and planned features for 1.21.1 in this project. Currently known bugs / Missing Features
Addons will be ported when the base mod is fully functional, and the addon system reworked.

Dynamic material registry system, with world generation, compat, and many other features