Immersive Realism is a custom pack made for myself, uploaded for my friends to download.
Feel free to download it yourself just note that it is very much not a professional Mod Pack, only minor tweaking has actually been done.
The pack focuses around realism and making the Modded Minecraft experience harder and longer. It has PyroTech for the early game and then Geolosys, Immersive Engineering and Immersive Railroading for the ore gen/production. You can expect to not find ore by just digging or caving, but instead have to find large veins that spawn, which may contain a way for infinite ore gen late game through TechGuns.
Furthermore due to Realistic Storage you will have to get creative with your limited storage options, should you use Impractical Storage to make a massive warehouse, perhaps mildly nerfed YABBA barrels or Immersive Engineering Silos, either of which automated with Logistic Pipes? It's entirely up to you, but there are no compact storage systems here.
As for world gen it is intended to be used with RTG, there are plenty of custom structures including Millenaire villages or create your own with Minecolonies.
Beware the Mine And Slash dangers as you venture further out from spawn and don't forget about the pollution!
(Some features might not behave as intended and it is very likely you might find some work arounds to restrictions put in place.)
The Project Immersive Realism Team
