TerraFirmaGreg-Vintage is a Forge modpack that makes the gameplay of Minecraft realistic and challenging, because it contains two of the hard and coolest mods for Minecraft, these are TerraFirmaCraft and GregTech CEu.
Modpack developers have carefully combined TerraFirmaCraft, which has little compatibility ability, and GregTech CEu, the best of the technical mods.
Also in the modpack there are other interesting mods that will allow you to pass the time with pleasure (or not):
and others, also all these mods have addons to diversify the gameplay even more! To make it easier for you to start developing in this complex world, there are quests in the modpack, with the help of them you can get used to this unfriendly world.