Abandon All Hope
To me the most horrific of all concepts is that nihilistic view of reality which posits that the universe is either truly void and there is no meaning or purpose to existence or it is governed by an entity or entities so profoundly Other that our existence doesn't even enter it's perception.
The following are tales which create a mood of such profound hopelessness, meaninglessness and purposelessness... The Darkest Things.
It shall continue to grow.