ALLOCATE 2+ GB OF RAM Fairly large modpack.
MultiMC Zip Link To install for MultiMC: Add Instance > Import from zip > Paste link > OK
Forge Compatible Optifine Drop into mods folder
Extensive tweaks done for mod integration and polish. Custom mods, items, textures, game mechanics, and recipes. Several years of development. The usual 1.6.4 mods have been reformed.