Relic Hunter: Building the world in 1941

Inside RUIN Gaming’s original adventure project: historical reconstruction, the Obsidian Abyss, the ANKH virtual studio, and the community support system helping bring the expedition to life.

Somewhere beneath the volcanic landscape of Kauaʻi lies a secret that was never meant to be discovered.

In December 1941, an expedition begins investigating a mystery buried beneath the island. Its journey leads through a reconstructed Hawaiian landscape of plantations, airfields, coastal roads and remote valleys, before descending into an underground complex known as the Obsidian Abyss.

Relic Hunter is RUIN Gaming’s original adventure project. Relic Horizon is the production programme behind it: a combination of historical reconstruction, expedition gameplay, environmental simulation and an experimental AI-assisted virtual studio.

Executive Summary

RUIN Gaming is developing an original adventure project set on Kauaʻi in 1941. Known within the development programme as Relic Horizon, with Relic Hunter as its adventure identity, the project combines historical reconstruction, exploration, infiltration, environmental puzzles, period vehicles, military installations, and an unfolding alternate-history mystery.

The central adventure leads toward The Obsidian Abyss, a fictional subterranean complex built into the island’s landscape. Players will investigate, navigate dangerous terrain, evade patrols, operate equipment, uncover evidence, and solve interconnected environmental puzzles. The ambition is not to create another generic tropical adventure. It is to build a world that feels geographically convincing, historically considered, and worth exploring.

The project also serves as a proving ground for RUIN ANKH, our developing agentic production system. ANKH is intended to coordinate research, worldbuilding, 3D modeling, programming, testing, and quality review through a virtual game studio. Its purpose is to help a human-led team build and validate an actual game, not simply generate attractive images or code.

There is substantial engineering work already documented. The latest dated Relic Horizon Alpha 3.14 report (October 14, 2026) records eight of ten patch goals built and tested in headless checks. Those include road and collision improvements, traffic distribution, period-specific assets, a geographic atlas, and Hawaiian place-name validation. One rendering-performance gate was still running, and a proposed tunnel feature was waiting for a suitable location and historical evidence.

This remains an active development project, not a finished commercial game. The next challenge is to turn the growing collection of world systems, assets, and prototypes into a coherent, repeatable, and genuinely playable adventure.

The community can help make that possible. RUIN’s Patreon support system helps maintain the infrastructure, AI tools, studio work, and events behind the organization. Technical contributors, historians, artists, testers, and players can also help without purchasing a subscription. Development notes, demonstrations, and briefings remain available to the wider community.

1. A Different Kind of Adventure

Two early twentieth-century views of plantation buildings, mill structures and fields at Kealia, Kauaʻi
Plantation scenes at Kealia, Kauaʻi, c. 1910–1920. Historical photograph. Library of Congress, Prints & Photographs Division, National Photo Company Collection, npcc.30909.

The premise begins with a specific place and a specific moment.

The working historical baseline is December 1, 1941. Kauaʻi is not simply a backdrop for a fictional treasure hunt. Its coastlines, mountains, valleys, rivers, roads, plantations, settlements, and military infrastructure are the foundation upon which the adventure is constructed.

The choice of date matters. The island’s military and civilian landscape was changing rapidly in the months before the United States entered the Second World War.

Consider Mānā Airport at Barking Sands. The State of Hawaiʻi aviation history records the Army’s acquisition of approximately 549 acres in 1940, followed by a further transfer of land in June 1941. The military installation was therefore part of the real pre-war landscape. At the same time, the historical record distinguishes the relatively limited facilities of the period from the much larger wartime construction that followed.

That distinction is exactly what Relic Horizon is designed to preserve.

A road, airfield, bridge, vehicle, or building should not appear in the world simply because it looks appropriate. The team must establish whether it existed, when it existed, and how confidently it can be reconstructed.

The result is a development process that treats historical research as part of worldbuilding rather than a final decorative pass.

Three Layers of World Truth

  • Layer One — Geographic Truth: The physical island: terrain elevation, coastline, ridges, valleys, rivers, and other landforms. These establish what is physically possible.
  • Layer Two — The 1941 Human Landscape: The island as people inhabited and operated it: roads, bridges, towns, plantation infrastructure, ports, airfields, buildings, vehicles, and military facilities. Each important feature needs a source, a date, and a confidence assessment.
  • Layer Three — Relic Horizon Fiction: The adventure itself: the Obsidian Abyss, secret installations, rival expeditions, hidden chambers, fictional patrol routes, and puzzle mechanisms. These elements can be dramatic, but they must not overwrite the historical record.

The distinction also protects the creative freedom of the game. The fictional story can be extraordinary precisely because the world beneath it has a credible foundation.

Creative sandbox notice: The Academy, Villa, harbour, and associated campus environment are treated as a designated creative sandbox. They can be altered to serve the experience without being misrepresented as historically accurate reconstructions of real 1941 locations.

2. The Island Is a System, Not a Backdrop

A convincing historical world requires more than a terrain mesh and a collection of buildings.

Relic Horizon’s geographic workflow is designed to connect research data to the actual game environment.

The reference pipeline includes:

  • USGS elevation and terrain data.
  • QGIS, PostGIS, GDAL, and Python for geographic processing.
  • A structured atlas of roads, bridges, and points of interest.
  • Historical source records and confidence labels.
  • Coordinate and transformation records.
  • Repeatable exports into the game environment.
  • Validation of roads, collisions, navigation, and spatial relationships.

This matters because a reconstructed island must behave like a place. A road needs to connect to something. A bridge needs to cross the correct terrain. A settlement needs to relate to its surrounding infrastructure. Vehicles need routes. Pedestrians and patrols need navigable space. Environmental systems need to respect elevation, drainage, and land use.

Development Order Priority

  1. Roads, bridges, and key infrastructure.
  2. Road traffic.
  3. Non-player characters and population.
  4. Settlements and points of interest.
  5. Flora, fauna, and environmental props.

The aim is to build a foundation that can support gameplay rather than an impressive collection of disconnected scenery.

The World Atlas

1954 USGS shaded topographic map of Kauaʻi and Niʻihau showing mountains, coastline and roads
Kauaʻi on the 1954 USGS 1:250,000 topographic map, the kind of source behind the World Atlas. Historical reference. U.S. Geological Survey.

One of the more important documented milestones is the Kauaʻi World Atlas. The Alpha 3.14 report records 56 features in its atlas ledger:

ClassificationFeatures
Verified38
Inferred15
Sandbox2
Fictional1
Total56

These classifications matter. A verified bridge, an inferred historical feature, and a fictional expedition installation are not interchangeable pieces of information.

The field atlas is intended to give the player a practical way to navigate the world, while the underlying development ledger gives the studio a way to understand where the information came from.

Historical accuracy is an ongoing process. As new evidence becomes available, the project should be able to update the world without losing the reasoning behind previous decisions.

3. A Living 1941 Environment

Elevated steel cane conveyor at the Lihue Plantation sugar mill on Kauaʻi, surrounded by grass and trees
Cane conveyor at the Lihue Plantation sugar mill, Kauaʻi, photographed 2008. Historical reference. Library of Congress, Prints & Photographs Division, HAER HI-82-18 (David Franzen).

The ambition extends beyond geography. The island is intended to feel inhabited, with infrastructure and environmental systems working together.

Roads and Transportation

Roads are being treated as connected networks with collision, surface geometry, bridges, and traffic routes.

The Alpha 3.14 report records key engineering improvements:

  • The coast highway was driven in both directions without collision blocks across the tested section.
  • All twelve campus roads were tested in both directions without recorded blocks.
  • The Kūhiō Highway connection was extended to meet the island network at both ends.
  • The Academy boulevard received sidewalks, kerbs, drains, manhole covers, hydrants, period-inspired street lighting, and royal palms.

The boulevard report records 1,446 paving slabs, 72 lights, 154 palms, 20 hydrants, 110 drains, and 30 covers. Repeated objects were instanced to reduce rendering overhead.

Traffic and Local Activity

Interior of Mill A at the Lihue Plantation sugar mill showing the roller mill train and steel walkways
The mill train inside Mill A, Lihue Plantation, Kauaʻi, photographed 2008. Historical reference. Library of Congress, Prints & Photographs Division, HAER HI-82-22 (David Franzen).

The project also records a traffic distribution system that varies by zone. The engineering report describes plantation areas with a predominance of cane trucks (a simulation parameter set at 84%), towns with more sedans and taxis, and the Academy with vehicles such as Packards and Cadillacs.

These percentages are simulation parameters describing the project’s simulated traffic distribution, not historical statistics or a verified census. The point is to make the environment respond to its setting rather than populate the entire island with an arbitrary selection of vehicles.

Period Equipment and Aircraft

The asset pipeline is producing historically informed objects and vehicles:

  • Pressed-Fiber Sun Helmet: A 1941 U.S. Army helmet model recorded for use by the Mānā garrison.
  • Hercules Interior Correction: Configured to draw geometry only when the player is aboard or within specific proximity. The real Hughes H-4 Hercules originated in 1942 and made its only flight on November 2, 1947 (North American Aerospace Museum (formerly Evergreen Aviation & Space Museum)); its presence in a 1941 setting is an alternate-history element.
  • Special Vehicles & Airships: Includes showcase concepts like a Grumman Goose and the fictional D-LZ 138 Kaiser airship. The Kaiser is an original fictional airship design created for Relic Horizon, an alternate-history design featuring a target envelope of 290m × 48m, ten engines arranged in five pairs, and six aircraft positions.

4. The Adventure: The Obsidian Abyss

Status: planned. The Alpha 3.14 report does not include Obsidian Abyss gameplay. The environments and sequence below describe planned design, not demonstrated functionality.

The historical island provides the foundation. The Obsidian Abyss provides the mystery.

This major subterranean adventure sequence is designed around an expedition into a fictional underground complex, with the surrounding world providing geographic and historical context.

The intended experience combines:

  • Exploration and navigation.
  • Infiltration and patrol avoidance.
  • Evidence gathering.
  • Traversal and grapnel use.
  • Environmental interactions.
  • Multi-stage puzzles.
  • Rising environmental danger and a flooding finale.

Planned Expedition Environments

Japanese crew standing on the deck and conning tower of the submarine I-400, its hull number visible
Japanese submarine I-400 with crew aboard, a real-world reference for the fictional I-400 Pen (the I-400 dates to 1944). Historical photograph. NH 111806 courtesy of the Naval History & Heritage Command.

The expedition passes through four planned environments. The I-400 Pen is a fictional, alternate-history element: the real Japanese I-400 submarine dates to 1944 according to the Naval History and Heritage Command, so no such installation existed on Kauaʻi in 1941.

  • Lava Tube Docks and I-400 Pen: Industrial entry environment introducing patrol encounters and deeper facility access.
  • The Silt Plains: Exposed areas where sightlines, navigation, and environmental contrast drive player choices.
  • The Megalithic Complex: Exploration environment built around evidence, symbolic language, and puzzle progression.
  • The Belly of the Beast: Confined interior environment escalating toward the planned flooding finale.

The Vertical Slice Sequence

U.S. Navy outboard profile and deck plan drawing of the Japanese submarine I-400
Outboard profile and deck plan of I-400, published by the U.S. Navy in 1946. Historical reference. NH 78650 courtesy of the Naval History & Heritage Command.
  1. Enter through the lava-tube docks.
  2. Navigate two available routes.
  3. Encounter patrol alert states.
  4. Interact with a floodlight.
  5. Use grapnel traversal.
  6. Discover a hidden chamber.
  7. Follow a readable chain of evidence.
  8. Solve an environmental puzzle (Three Silent Gates, Counterweight Gallery, Black Water Engine, or Misaligned Stars).
  9. Reach a flooding finale.

The development principle is straightforward: complete one coherent, testable expedition before expanding the island with more disconnected features.

5. The World Must Behave as Well as It Looks

Procedural Ecology

Vegetation is placed according to environmental conditions (elevation, moisture, soil, exposure) using deterministic drivers. Instancing and an LOD0–3 pipeline manage geometry rendering to maintain smooth performance in browser contexts.

Visual Presentation vs. Gameplay Truth

  • World Truth: Terrain, collision, navigation, interaction ranges, and gameplay state.
  • Visual Presentation: Lighting, weather, fog, vegetation density, and post-processing.

Changing visual presentation must never silently alter gameplay truth—an optimization cannot obscure clues, alter collisions, or break AI patrol paths.

Performance and Engine Strategy

The current browser prototype runs on Three.js (r128). Frame-time percentiles, draw calls, GPU uploads, and loading stalls are evaluated continually. While Unreal Engine 5 remains a production candidate for high-fidelity deployment, the browser prototype remains the active demonstrator for rapid, shareable iteration.

6. What Is Built, What Is Being Tested, and What Comes Next

According to the Relic Horizon Alpha 3.14 report (October 14, 2026):

Development ItemDocumented StateEvidence
Coast road, Lumahaʻi bridge and campus roads: no invisible wallsBuiltDriven both ways: 0 blocks
Kūhiō Highway joins the North Shore roadBuiltRoad meets the island network at both ends
Academy boulevard street furnitureBuilt1,446 slabs, 72 lights, 154 palms, 20 hydrants, 110 drains, 30 covers
Traffic by zoneBuiltSimulated mix: plantation belt 84% cane trucks; towns mostly sedans and taxis
Hercules interior no longer shows through the hullBuiltInterior draws only when aboard or nearby
U.S. Army 1941 pressed-fiber sun helmetBuiltWorn by the Mānā garrison
World Atlas ledger and field atlasBuilt56 features classified
Hawaiian orthography gateBuiltBuild fails on an unmarked place name
Church view at or under 1,300 drawsGate runningResult pending
Art Deco road tunnelsWaitingNeeds a location and a 1941 source

Note: Headless test execution proves structural code completion, but visual and complete gameplay acceptance remains ongoing.

7. ANKH: The Virtual Studio Behind the Expedition

RUIN ANKH operates as an agentic production system driving a Virtual Agent Game Studio:

  • The Control Plane: Manages request handling, context retrieval, execution planning, tool invocation, and resource/permission tracking.
  • Vasari (Production Orchestration): Divides complex tasks into structured packages, tracks dependencies, and coordinates role assignments.
  • Leonardo da Vinci (Architecture & Review): Evaluates creative and structural coherence independently, challenging unsupported assumptions and enforcing quality gates.
  • Specialist Production Roles: Dedicated workflows for research, GIS processing, 3D/glTF modeling, rigging, gameplay engineering, QA testing, and documentation.

Working vs. proposed: The Alpha 3.14 studio plan documents twenty-eight roles running as seven working skills, with the work orders and test evidence cited in this article. Elements described above that are not covered by that report should be read as proposed architecture.

Human leads maintain ultimate authority over production releases, public commitments, and budget allocations.

8. The Guild Hall: A Free Home for the Community

The RUIN Guild Hall is a persistent browser-based headquarters for the community—a virtual campus to assemble, view operational portals, join events, and track projects.

The Guild Hall will always be free to access. Community participation and organizational rank are earned through contribution and merit, never sold or locked behind paywalls.

9. How to Support the Expedition

Become a RUIN Supporter

RUIN’s Patreon framework (updated October 24, 2026) offers five voluntary monthly support levels:

LevelMonthly SupportRecognition & Cosmetic Benefits
SupporterUS $3Supporter badge & Discord role, name on roll, Supporter Sundays game vote
VanguardUS $5Vanguard badge & role, plus all Supporter benefits
SustainerUS $10Sustainer badge, colored Discord name, weighted game selection vote
PatronUS $20Patron badge & featured supporter-roll placement
BenefactorUS $50Benefactor laurel badge, top-of-roll credit, optional guild-meeting recognition

All supporter perks are cosmetic recognition. Organizational rank cannot be purchased. Patreon support funds shared studio infrastructure and servers. It does not sell officer rank, competitive advantages, or exclusive access.

Supporting the expedition helps maintain the tools, computing infrastructure, research resources and development services used to build Relic Horizon. Community members can also contribute directly through research, testing, programming, historical documentation, artwork and other practical skills.

Support is voluntary. The Guild Hall remains free to enter, and no financial contribution purchases organizational rank, gameplay superiority or authority over the project.

Community Channels

10. What Support Actually Makes Possible

Voluntary support sustains concrete production requirements:

  1. Research & Verification: Historical source audits, archival imagery, and geographic data.
  2. AI & Computing Infrastructure: Local compute, model inference, and project tooling.
  3. 3D Production: Asset optimization, texturing, rigging, and animation pipelines.
  4. Engineering & QA: Browser engine integration, automated test runners, and performance benchmarks.
  5. Community Infrastructure: Server hosting, web services, and community event systems.

11. The Road Ahead

Development follows an incremental roadmap:

  • Foundation: Historical audits, GIS terrain integration, and asset validation.
  • World Simulation: Traffic, population density, and environmental props.
  • Expedition Gameplay: Traversal, patrol AI, puzzle mechanics, and vertical slice validation.
  • Narrative & Progression: Quests, dialogue, and persistent state management.
  • Production Quality: Rigorous performance tuning, accessibility, and engine evaluation.
  • Community Integration: Free Guild Hall deployment and public progress reporting.

One Community. One Expedition. A World Worth Exploring.

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