Deathless Dark

On earth in a alternate universe where fungi rule the world, some fungi grow so tall and big evolving photosynthesis there caps bock most of the sun for other organisms (think of roof forests but more intense) and because of lack of sunlight many organisms had to adapt and evolve, most of them blind and evolution patterns similar to ones seen the bathyal zone of the oceans depths, you are a organism that lives in a giant crater covered entirely by the largest fungi that are blocking the sun so they can photosynthesize, and you are trying to survive by crafting items, and maybe one day you will be able get rid of that giant fungus that is block this craters sun and see the sun for the first time...