This mod adds several new biomes, mobs, blocks, and even water to the nether
A very acidic biome that has a dangerous radioactive mob in it
I took this screenshot before I added the wet nylium
A very cold place in the hellscape that is the nether, cold enough that water can be found here, and rather a lot of it
A highly dangerous mob that lives in the Toxic Wastes
A place more hostile than the basalt deltas itself, they are the reason the nether is so hellish
A hostile and barren place full of piglins and blazes, if you can't find a nether fortress then maybe this biome will be the one for you