The GM's View of the Setting
The world is older than the empire that named it. The empire is older than it admits.
The setting the players see is Mar de Oro as the powers want it seen: a region of opportunity, danger, and exotic possibility. The setting the Game Master runs is Mar de Oro as it actually is: a region of extraction built on older foundations that the current age does not fully understand.
What the players see
A golden sea between three continents, dotted with island chains, crossed by trade winds and the paths of rare airships. Independent city-states, colonial outposts, plantation estates, naval stations, and free-sailing zones. Sea vessels carrying most people and ordinary cargo; strategic airships carrying crews, dispatches, high-value cargo, and weapons. Churches operating schools, hospitals, inquisitions, and intelligence networks. Companies with their own militias and diplomats. Pirates with codes of their own.
What the GM knows
The Fortera field that allows Éterlumin to function is not uniform. It has deep zones and shallow zones, resonance nodes and dead patches. The old civilizations that preceded current empires built around this geography and left structures that still respond to Fortera pressure. Most colonial powers do not know this. They think they are drawing a valuable gas. They are actually disturbing a planetary system whose full behavior they have not yet triggered.
World secret the players may never learn
The source chambers are not natural formations. They are installations. Someone built them, calibrated them, and left them operating on a logic that current engineers cannot read. The Solarian Church has one document, sealed, that uses the word "maintenance" to describe what the Church calls miracles.
The five tensions that drive the campaign
| Tension | What the players feel | What the GM tracks |
|---|---|---|
| Empire vs. autonomy | Whose rules apply here? | Which factions gain from disorder and which from order. |
| Science vs. faith | What is Éterlumin, really? | Who controls the explanation controls the resource. |
| Old world vs. new age | What did the old builders know? | The source chambers are waking on a schedule no one has decoded. |
| Visibility vs. deniability | Who can be blamed? | Every faction has an official position and an unofficial one. |
| Loyalty vs. survival | What does my character owe? | Patrons have agendas. Debts compound. Safety is temporary. |
Running the setting without lecturing
Never stop the game to explain setting history. Instead, put history in the mouths of people who want something. A priest who quotes scripture about Éterlumin is trying to control it. A company factor who cites the old charter is claiming territory. A dockworker who calls a source chamber the "old complaint" knows more than the engineers and is keeping that knowledge local.
Setting delivery rule
Every piece of setting information should arrive attached to a person who wants something, a document someone does not want found, or an object that should not exist where it is. Worldbuilding is never scenery. It is always pressure.