Game director Joe Shely said that the action will unfold in a grim reality where the Lord of Terror has achieved a complete victory and subjugated all of Sanctuary.
The past will show the events that led to the world's capture by infernal hordes, the present will show the struggle for survival in a ruined land, and the future will be revealed through the dynamic change of the environment under the influence of the “Commanders of Terror.”
The developers call this system “terraforming”: each general of hell will change the biomes under his control, including the landscape, weather, and vegetation.
Thanks to procedural generation, the same location can change dramatically. Initially, the lord of the undead can control the territory, filling it with hordes of zombies and putrid decay. Later, the player may discover a stronghold of human survivors or a completely new nightmare zone created by another demonic leader there.