Broken_Chains

This Mod is a horror theme additions mod that things like new World Generation, Creatures, and Mobs 

The Abyss

A new Dimension that is only accessible if you find the portal room to or

get sent there by one of the new Mobs. The Abyss is a dark

barren landscape that generates like the Overworld but has randomly

generated corrupt terrain and structures from all Dimensions

and to escape it is same as the portal room in the Overworld

(Other mods can spawn their own custom creatures, mobs, and structures.)

World Generation 

The Terrain will look corrupted and broken to have a feeling of someone or something messing

with your world (It does not actually corrupted your world only generates strange unconnected terrain.)

Creatures

Strange faceless Farm Animals that inhabit your world and can attack if provoked

but at night can attack on their own

(Default Farm Animals still spawn and are unchanged.)

Mobs

Similar to the Farm Animals but they are faceless Hostile Mobs and will attack whenever

but only spawn at night and have unique way of attack from their default vanilla variant

(Default Mobs still spawn and are unchanged.)

Structures

New randomly generated structures will be placed in your world some are just strange buildings

other are sinister builds