The Codex
Every chapter of Mar de Oro
The world of Aeon in full: its history, its powers, its faiths, its technologies, and the mysteries the crowns would rather leave buried. Read in any order.
Play at the Table
Enter the Golden Sea
A tabletop role-playing game is a shared story created through conversation.
Open chapterThe Face of War in 7202
Combat in 7202 is not clean.
Open chapterShips of Sea and Sky
A ship is never only transportation in this setting.
Open chapterTrade, Letters, and Signals
Empires move on paper as much as on powder.
Open chapterTravel, Hard Country, and Survival
Travel in Aeon should feel like movement through reality, not a blank space between scenes.
Open chapterCrew Concepts and Campaign Beginnings
Strong Mar de Oro campaigns begin with a shared shape.
Open chapterFirst Session Guide
For a first session, begin with a concrete pressure.
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World
Welcome to Aeon
Walk quietly.
Open chapterThe World of Aeon
It is a tale of divine creativity, the struggle for understanding, and the eternal quest for harmony.
Open chapterA History of the Sundering World
Before history there is scripture, and before scripture there is memory trying to survive its own inadequacy.
Open chapterThe Continental Powers
Every flag is a promise and a threat simultaneously.
Open chapterArchipelagos of the Mar de Oro
The sea does not care who claims it.
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Faith & Wonder
The Faith of the Codex
Faith is not an optional backdrop in Aeon.
Open chapterFortera & Éterlumin: The Science of Wonder
It is neither wind, nor flame, nor the pull of the earth, yet it may alter the motion, heat, or other properties of matter.
Open chapterIllustrated Technical Dossier
How Airships Work
Lift, motion, engineering, failure, and life aboard vessels in the Early Age of Flight.
Open chapterAirship Design
The Shape of Flight
How the physical rules of flight shape hulls, machinery, vessel classes, national doctrine, and playable ship maps.
Technology · AirshipsOpen chapterCrew Psychology
The Ground Beneath the Ship
Airship hands do not merely leave the earth. They learn to treat the vessel as ground, and to accept a death they may have time to watch approaching.
Living World · Ship lifeOpen entrySociety & Institutions
Coin, Credit, and Crown
Copper, silver, gold, and rare platinum on a simple 10-to-1 standard, plus foreign coin, countermarks, bargaining, bank notes, credit, and prize money.
World · Society & InstitutionsOpen entryThe Powered Arts
Those who shape Fortera deliberately are called many things: priests, scholars, witches, singers, blessed, dangerous, touched, gifted, or cursed depending on who is watching.
Open chapterThe Curse of the Moons
The curse of the moons is among the most feared conditions in Aeon.
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Character
Creating a Character
Before you play, you build a person.
Open chapterHomelands and Peoples
A homeland is not merely the place where you were born.
Open chapterBelonging in the Golden Sea
Some people are formed less by a single continental homeland than by the crossings, ports, households, and crews of the Golden Sea itself.
Open chapterCallings and Crew Roles
There is a question that follows you through every port in Mar de Oro, asked in a dozen languages by customs officials, tavern keepers, ship captains, and suspicious strangers with their hands near th...
Open chapterBonds, Burdens, and Reasons to Adventure
A motivation is an idea.
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Play at the Table
Using Mar de Oro with your own rules
Read these in order: the design principles first, then the procedures, then the system-specific packs.
- Tales of Mar de Oro: Native RulesThe complete first-party game for this setting, if you want a rules engine written for Mar de Oro rather than a conversion.
- How Mar de Oro PlaysThe setting's approach to incomplete knowledge, human motives, factions, consequences, system-neutral play, and player choice at the table.
- A System-Neutral TTRPG SettingThe conceptual entry point: why the setting's canon stays separate from any ruleset's math.
- System-Neutral AdaptationThe procedural framework for turning fiction into whatever numbers your system uses.
- Optional System ConversionsReady-made packs for Fifth Edition, Pathfinder First Edition, Pathfinder 2e Remastered, and Forged in the Dark.
The Glossary of Aeon
A concise reference for the terms, powers, moons, and factions that appear throughout the codex.
Open the Glossary