I play on sadistic ultra hard. SadZombieLand featured starvation, living inside a mob spawner, tornados, and also GT6.
I’m repackaging it right now to start up the server again. I’m scaling back the difficulty a bit for some new people who are joining. I may post the pack later.
This was our early game survival guide:
https://demosthenes.org/Minecraft/SadZombieLand/dist/Guide.html