This is a modpack of 200+ mods that changes the world generation, adds shaders, and adds other content to make the game more fun, and to make it look better.
This modpack adds new ores, new tools, new items, new mobs, more extreme world generation, and many new structures and biomes. It does not overhaul vanilla mechanics or add complicated tech/magic.
Fabulous MC is probably not compatible with any other mods, and I haven't tested it with non-Windows computers.
This modpack can be incredibly intensive, and you seriously have to add a custom amount of RAM to this modpack if you can, because it'll just crash otherwise. I would also keep shaders off or lower shader settings if it's too much.

200+ mods to make the game look great, and to add more content.