Darkness Revealed is a collection of horror-themed "dimensions". They range in variety.
The Overworld is overhauled by Terralith. There is also the magical archwood forest.

List of dimensions:
Dimensional Doors
True Darkness Elementriy
The Midnight
Shadowlands (4 dimensions!)
Toybox
Voidscape
Deeper and Darker

I like how most of the names of the mods relate to darkness.

Some of the dimesnion mods come with tutorial books. If they don't, the mod page should tell you how to get to whatever dimension you are trying to get to.

I shall not spoil everything, but this pack also has Ars Nouveau. You can do... magical stuff. I have no idea how it works so hopefully you know more than I do.
Hopefully you can use the magic to protect yourself in the new dimensions.

Thankyou for your time. Hope you enjoy. Btw the name of this mod pack is named after a perk called "Darkness Revealed" from the game Dead by Daylight.
I could argue that this mod pack is named Darkness Revealed because of the dimensions here are "revealed" and most of their names associate with darkness.

All content in this mod pack does not belong to me and belongs to their respective owners.