Integrating the rigorous economic and political framework of Adventurer Conqueror King System II (ACKS II) into Arduin brings concrete structure, logistical weight, and long-term domain gameplay to David Hargrave’s notoriously gonzo, high-lethal, high-magic fantasy world. This blog post picks right up from OSR Commentary -The advantages & disadvantages of Integrating ACKS II With the Arduin Rpg of David Hargrave
Where Arduin excels at wild high-fantasy elements, technomagic, and bizarre planar trade, ACKS II provides the mathematical architecture for land management, tax revenue, vassalage, and army maintenance.
1. Mapping the Arduinian Settlement & Demographics
In ACKS II, domain math relies on Families per Hex (typically 6-mile hexes). Arduin features extreme population variance—from dense human/elvish kingdoms to untamed wilderness filled with Phraints, Saurigs, and wild magics.
Pioneer / Frontier Domains (e.g., The Mistlands, Wild Country of Amthor):
Civilized Domains (e.g., Heartlands of the Country of Arduin):
Arduin Demographic Adjustments (Racial Domains)
ACKS II applies growth and demand modifiers based on non-human populations. Translate Arduin’s unique races into domain modifiers:
| Race / Faction | Population Growth / Cap | Market & Demand Adjustments |
| Phraint (Insectoid) | Fast growth; double standard human repopulation rate. | High demand for metal toolings, sugars, and organic resins. Export polished chitin and exotic venom. |
| Saurig (Reptilian) | Normal growth; require warm/swamp biomes. | High demand for preserved meats and warm textiles. Export exotic hides and alchemical glands. |
| Dwarven / Gnomish | Slow growth (halved rate); high structural integrity. | -2 Demand to metals/tools; +2 Demand to rare foods, timber, and grains. Strongholds cost 15% less to construct. |
| Elven / Elphidi | Extremely slow natural growth; high stability. | -2 Demand to fine textiles and timber; +2 Demand to exotic metals and rare spell components. |
2. Adapting ACKS II Domain Revenue for Arduin
ACKS II tracks domain income through Taxes, Land Revenue, Resource Production, and Market Trade. In Arduin, standard agricultural revenue must account for technomagic, mana nodes, and planar trade.
A. Base Domain Monthly Income Formula
$$\text{Monthly Income} = (\text{Peasant Families} \times \text{Tax Rate}) + \text{Domain Resource Bonus} + \text{Planar/Trade Tariff} - \text{Garrison Expenses}$$
B. The Arduin "Morale & Unrest" Table Integration
ACKS II uses a domain confidence system (e.g., Enthusiastic, Content, Rebellious). In Arduin, replace standard rebellion triggers with Hargrave-style domain hazards when domain morale drops:
3. Garrisoning, Mercenaries, and Arduin Armed Forces
In ACKS II, domains require garrisons (typically 1 soldier per 10–20 families in civil lands, or 1 per 2–5 families in borderlands) to keep land secured from wilderness monsters.
Arduin Unit Cost & Upkeep Modifications
Because Arduin features high-lethality combat, heavy armor, firearms, and exotic weaponry, adjust standard ACKS II troop templates:
Standard Heavy Infantry: 12 gp/month upkeep.
Phraint Jump-Troops (Light Chitin Shock Troops): 25 gp/month upkeep. High movement, natural armor, jump capabilities in mass combat.
Techno-Garrison (Equipped with Blasters / Power Armor): 100+ gp/month upkeep + requires an intact power/recharging facility in the stronghold.
War Beasts / Mounted Saurig Cavalry: 40 gp/month upkeep. Requires extra grain/meat logistics.
4. Strongholds and Technomagic Sanctums
In ACKS II, strongholds cost gold pieces to build (e.g., 15,000 gp+ for a basic keep, securing a 6-mile hex).
Building in Arduin
Physical Defenses: Walls, keep towers, moats (Standard ACKS II structural costs).
Arcane / Technological Augmentation:
Force-Shield Generators: Equivalent to 50,000 gp of stone wall integrity; costs 500 gp/month in power crystals/mana.
Planar Anchor Stone: Prevents random teleportation, dimensional phasing, or ethereality within the stronghold footprint (Cost: 25,000 gp).
Alchemical Moats / Defense Systems: Acid, napalm, or automated defense turrets added directly to the stronghold's structural ACKS II defense rating.
5. Domain Turn Process for Arduin Campaign
Run the domain turn on a Monthly Cycle:
1.1. Calculate Population & Revenue:ACKS II Standard Step.Determine current peasant/citizen family count. Collect taxes (1-2 gp/family), land revenues, and special node income (mana, ruins, planar tariffs).
2.2. Pay Domain Upkeep & Garrisons:Logistics Step.Pay stronghold maintenance, troop wages, and upkeep for specialized techno-magical or planar defenses.
3.3. Domain Event & Hazard Roll:Arduin Modifications.Roll 1d20 for Domain Events. Combine ACKS II political events (plague, rival lord claims) with Arduin hazards (Planar Alignment, Wild Magic Storm, Kaiju/Elder Monster Incursion, Technomagic Malfunction).
4.4. RULER ACTIVITIES & EXPENSE:Action Phase.Rulers undertake Dedicated Activities (ACKS II activity system): Alchemical synthesis, Technomagic fabrication, Spell research, or Hex expansion/clearing.
Summary Checklist for the Judge/DM
Scale: Use 6-mile hexes for domain management.
Currency: Standardize Arduin’s varied coinage to ACKS II Gold Piece standards for domain purchasing power.
Class Capstones: Allow Arduin’s unique classes (Rune Weavers, Technos, Arcane Archers, Phraint Warriors) to establish domains at 9th level using standard ACKS II follower/stronghold rules.
Tying ACKS II Domain Rules directly into Hargrave’s classic module "Welcome to Skull Tower" bridges the gap between a high-lethal megadungeon dive and a strategic, domain-level struggle for control over the region.
Skull Tower and its surrounding territory (the bleak, monster-haunted wastes or borderlands where the tower casts its shadow) present a classic ACKS II objective: a high-value, high-hazard nexus that can either destroy a fledgling realm or turn it into an economic powerhouse.
1. Strategic Context: Skull Tower as a Borderland Domain Node
In ACKS II, a domain is established by building or clearing a stronghold to secure a 6-mile hex. Skull Tower is an intact, highly fortified, multi-level Class IV Monster Lair / Corrupted Stronghold.
Hex Security Level: Borderland / Wilderness (0% Secured).
Current Garrison: Undead hordes, rogue wizards, planar monstrosities, and Hargrave’s signature lethal traps.
Strategic Value: Skull Tower sits directly atop a major Arduinian Mana Node and planar convergence point. Securing it converts a major regional hazard into a Class III Fortified Domain Center.
2. Clearing and Claiming Skull Tower (ACKS II Mechanics)
Before the PCs can collect a single gold piece in domain taxes from surrounding settlements, they must systematically clear the tower using ACKS II land-clearing rules adjusted for Arduin's lethality.
A. Clear Threshold & Dungeon Cleansing
The 6-Mile Hex Clear: Standard ACKS II requires defeating all wandering monster groups in the hex. For Skull Tower, the hex cannot be secured until Level 1 and Level 2 of the dungeon are completely purged, and the central power core/sanctum is controlled.
Cleansing Expenses: Purging the lingering planar radiation, dark altars, and necromancy costs 10,000 gp in alchemical/holy supplies and 1 month of dedicated downtime by a Cleric, Techno, or Rune Weaver.
B. Converting Skull Tower to a Player Stronghold
Once cleared, the physical structure provides an immediate base stronghold value without paying full construction costs from scratch:
| Feature | ACKS II Equivalent Value | Arduin Technomagic / Planar Benefit |
| Main Tower Outer Shell | 35,000 gp Keep | High structural AC; immune to non-magical siege engines. |
| Dungeon Vaults | 15,000 gp Dungeon/Cellar | Ideal for secure treasury, prisoner holding, and laboratory space. |
| Skull Tower Apex Beacon | 20,000 gp Arcane Tower | Acts as a Ley Line Re-director. Grants +2 to ritual magic and enables long-range scrying. |
3. Economic Revenue & Specialized Resources of Skull Tower
A standard ACKS II domain relies on peasant farming. Skull Tower’s domain operates on Exotic Extraction, Planar Tariffs, and Dungeon Leasing.
$$\text{Monthly Domain Income} = \text{Peasant Taxes} + \text{Dungeon Leasing Fees} + \text{Soul/Mana Crystal Revenue} - \text{Garrison Upkeep}$$
A. The "Dungeon Leasing" System
Instead of exploring lower levels themselves once they become rulers, the PCs can lease access to the uncleared deeper levels of Skull Tower to rival adventuring parties (a classic Arduin trope):
Leasing Revenue: Generates 500–3,000 gp/month in entry tariffs, standard dungeon taxes (typically a 20% cut of all recovered loot), and sales of supplies at inflated border-town prices.
Risk: Unsuccessful adventuring parties cause "Dungeon Spills"—monsters escaping lower levels into the upper domain hex.
B. Technomagic & Mana Node Harvest
The core of Skull Tower taps into subterranean power lines:
Mana Crystal Harvest: Produces 500 gp worth of raw power crystals/month, usable directly for spell research, magic item creation, or powering technomagic devices.
Planar Gate Tolls: If the PCs control the portal chambers within the tower, they can set tariffs for planar merchants (e.g., Gith, Demons, or Phraint trade cartels), generating 1d6 × 1,000 gp/month during favorable cosmic alignments.
4. Domain Garrison & Defense Against Counter-Attacks
Once the PCs fly their banner over Skull Tower, the surrounding factions and lower-dungeon horrors will notice.
Recommended Garrison Structure (To Keep Hex Secured)
100 Heavy Infantry / Phraint Shock Troops (Base borderland requirement).
1 Dedicated Arcane Guard / Techno-Specialist Unit stationed at the tower apex to operate defensive arrays.
Monthly Upkeep: ~1,800 gp/month.
The "Deep Incursion" Hazard (Monthly Domain Roll Add-On)
When rolling for monthly domain events in the Skull Tower hex, add the Deep Incursion Table (1d6 on a domain event roll):
Undead Resurgence: Necromantic energy leaks from lower levels; 2d10 Skeletons/Zombies manifest in the lower ward.
Rival Adventuring Party Raid: High-level NPCs attempt to "delve" the PCs' tower and loot the vault.
Planar Breach: A gate in the cellar shifts; wild magic storm alters local terrain for 1d4 weeks.
Phraint Hive Diplomatic Ultimatum: Local Phraints demand mining rights to the tower's sub-basement.
Techno-Magical Overload: The tower's power core destabilizes; requires immediate 1,000 gp repair or causes a localized shockwave.
Subterrene Counter-Attack: A boss monster from the un-cleared deeper levels leads an army up the stairwells to reclaim the upper tower.
5. Ruler Activities Specific to Skull Tower
Rulers using ACKS II Dedicated Activities at Skull Tower gain specialized options:
Lower-Level Sealing: Spend 2,000 gp and 1 week to permanently collapse or spell-seal specific dungeon corridors, reducing the Domain Hazard Category by 1 step.
Automated Defense Retrofitting: A Techno ruler can spend 10,000 gp to install automated dart/laser turrets, replacing up to 20 standard garrison soldiers for domain defense calculations.
Planar Beacon Tuning: A spellcaster ruler can attempt to shift the alignment of the tower's mana node, attracting specific planar immigrants (e.g., Elphidi, celestial refugees, or lawful planar traders) to settle in the outer hex.
