Divide all health values in the ruleset by 10, and likewise divide all current health values for Demiurges and Non-Player Characters by 10 (rounding down).

Append the following lines to the rule Living Beings:

Any Demiurge or Non-Player Character that has a health of 0 is said to be dead, otherwise they are living. A Demiurge or Non-Player Character reduced to a health of 0 is said to have been killed. Dead Demiurges cannot take dynastic actions unless otherwise stated.

Non-Player Characters have a Temperament which is a publicly tracked value and is one of Ally, Neutral, or Enemy; it defaults to Enemy. Non-Player characters with these values can be referred to as Allies, Neutrals or Enemies respectively.

Append the following to the first line of Fleshmancy: Phalanxes which have Demiurges as owners are Allies, otherwise they are Neutrals.

Append the following to the first paragraph of Wide, Empty World of the Damned: Any Demiurge or Non-Player Character with a Current Location of a given Location is said to be in that location.

Create a rule called The Flow of Battle:

Each location has a non-negative integer called Horrors Present, defaulting to 0. This value is publicly tracked for all locations.

When a Demiurge, Ally or Neutral Does Battle in a Location, and either the number of living Enemies or Horrors Present in that location is non-zero, the below steps are followed as an atomic action. For each step of this action, if the combatant (hereafter defined as the aforementioned Demiurge, Ally or Neutral in this rule) is dead at the end of that step then increase the number of Horrors Present by 1 in the location and skip all further steps.

- If the location has non-zero Horrors Present, the combatant must reduce their health by the Horrors Present (to a minimum of 0), and reduce the Horrors Present by the amount of lost health
- If there are more than 0 living Enemies in this location then follow the following process (henceforce known as Clashing Blades):
    * Select the enemy with the lowest health value in that location, choosing randomly in the event of there being multiple valid choices
    * Compare the health total of the combatant and the chosen enemy. The entity with the higher and lower health values are known as the winner and the loser respectively. If the two health values are the same, both entities are the loser
    * Reduce the winner’s health (if one exists) by half of the health of the loser to a minimum of 0
    * Set the health of the loser(s) to 0
- If there are any remaining living Enemies in this location, repeat the process of Clashing Blades as many times as required for either no enemies to be left, or for the combatant to be dead (whichever comes first)

The successful completion of this atomic action without the combatant being killed is referred to as Clearing that Location.

If a dynastic rule called Items exists, remove the effects of Raku Gem and Taru Gem.

(Flavour text note: The below has been added at approx 80 minutes in.)

Add a subrule to Locations called Dungeons:

The locations in this subrule are also considered Locations, but are classed as Instanced Locations and have the following additional rules:
-All Instanced Locations will have Unknown in their name. A given instance is referred to by replacing Unknown with any text; that text is flavour text.
-In addition to other prerequisites listed, all Instanced Locations have the prerequisite of “The Demiurge that Journeys to an instanced location must name a specific instance that they intend to reach, even if that instance does not exist yet.”
-All Instanced Locations have a Horror Count which is a lower and upper bound that the Instances can be created with - the number of Horrors Present in that instance when it is created are randomly determined between those two values.
-All Instanced Locations have Treasures. This is a list of Items, Provisions and health changes that the instance can be created with, in the distribution that the Instanced Location dictates (or evenly distributed if not stated). Often, only a subset of those Treasures will be in a given instance.
-Any instance can be removed by any Demiurge if it has no living Demiurges in it.
-An instance is created if it does not exist when a Demiurge fulfils all prerequisites of travelling to that instance.
-Upon entering an instance with Enemies or Horrors present, the Journeying Demiurge Does Battle.
-Scavenging for Supplies in an instance has the effect of granting one of the Treasures in that instance at random to the Demiurge. Any Treasures that would increase or decrease a variable outside of its legal limits when obtained will instead set it to said limit, and if that is not possible, the Treasure is lost.

The following are the Instanced Locations:
Name: The Unknown Dungeons
Description: In this nightmarish world, previously benign structures are now terrifying mazes of despair.
Horror Count: 1-10
Treasures: 1 Provision, 2 Health, 1 random Item, 1 random Item, 1 random Item
Prerequisites: You can only Journey here from Lost and Alone.
Rules Text: There is a 1 in 5 chance of an instance of this dungeon being created with an Enemy called “The Butcher of The Unknown Dungeons”, replacing Unknown Dungeons in that name with the instance name. This Enemy has 4 health, and has a Current Location field which lists this instance. If this location is Cleared while this enemy exists, the clearing Demiurge gains 3 Treasures.