Conquer the Universe
This 1.12.2 Modpack features all of the greats: Galacticraft, Mekanism, Thermal, OpenComputers, Actually Additions, IC2 Classic, Tinker's, RFTools, AE2, Blood Magic, Botania, Thaumcraft, and more!
To power all these hefty machines, inside this pack you will also find: NuclearCraft, Extreme Reactors, and Mekanism:Generators just to name a few.
For those interested in pulling a Michael Bay and going all-out on explosives, offered to you is ICBM - Classic for all your destruction needs.