Varium

This mod allows players to rediscover minecraft with new biomes with new mobs and bosses, new weapons and armor to become more powerful and even a new dimension to explore

improvements are still planned for the future

The scary dimension isn't finished their is only one boss in their and two biome, I will add two more biome in this dimension one boss and one monster for each biome and a ultimate stuff when you win the for boss. 
It comming soon !!!!

To help Mcreator :
https://mcreator.net/donate