I have been working on a new fantasy river-crawl RPG called The Iron River. The project started because I saw a computer game pitch by Golden Grove Games about traveling and trading along a massive river, and I immediately wanted to turn that concept into a tabletop campaign. (Golden Grove have since moved to a slightly different concept)

Most fantasy campaigns focus on traditional dungeons or kingdom maps. This game focuses entirely on a single, massive river. A major trade route carries wealth, rumours, disease, armies, gods, wreckage, and every bad decision downstream.

The Premise
In The Iron River, you do not play generic adventurers. You play the officers of a debt-financed cargo barge. You leave a bronze-age coastal empire to travel upriver, searching for mountain cultures who mine and forge iron.

The Bronze Coast has salt, wine, olive oil, bronze tools, incense, medicine, cloth, pottery, coin, and creditors with excellent memories. It lacks iron and the mountains have it.

In this setting, mountain iron completely outclasses bronze. Access to iron changes farming, war, shipbuilding, fortification, trade, slavery, law, and empire. It is guarded, ritualized, and politically dangerous. You cannot simply sail upriver, buy a few ingots, and come home. You row, pole, tow, scull, bargain, winter, repair, bribe, offend, apologize, bury your dead, and try to keep your map safe from thieves.

Game Mechanics and Progress
The journey takes months. A hex on the map does not represent a fixed physical distance. Instead, one hex equals a single playable stretch of river. This could be a marsh basin, a toll reach, a rebel city, a sacred lake, a cataract, a wintering site, a gorge, a ford system, or a dangerous branch.

In open water, your barge might cover 200 kilometers in a single campaign turn. In heavy reeds, floods, low water, or hostile territory, you might progress only a few kilometers. The hex measures expedition progress rather than hull speed. A cargo barge moves slowly and requires constant labor.

To run the vessel, players choose specific officer roles:

• The Captain: Gives orders when debate must end.
• The Navigator: Chooses routes and maintains the map.
• The Quartermaster: Tracks cargo, wages, stores, and debt.
• The Bosun: Keeps the crew rowing, hauling, repairing, and working through fatigue

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• The Factor: Handles markets, tolls, bribes, gifts, and contracts.
• The Ritualist: Reads omens, tends the dead, seals cargo, and placates river spirits.
• The Guard Captain: Handles watches, weapons, boarding actions, and prisoners.

Inspiration and Cargo
The design draws from three main sources. Heart of Darkness inspires the long journey into contested interior spaces. The African Queen provides the tone of a small, stubborn working vessel pushing through dangerous water. Outlaws of the Water Margin influences the riverine rebellion, marsh strongholds, outlaw politics, and corrupt authorities.

Your cargo affects the political landscape of the river. Salt preserves fish, saves starving towns, feeds armies, or cures hides. Medicine stops fevers but causes scandals if you sell it only to the rich. Bronze tools can repair a canal or arm a rebel group. Wine seals bargains or ruins crew discipline. Olive oil lights shrines or buys safe passage through taboo water. Every cargo unit serves as a potential profit, problem, weapon, or apology.

If you sell salt to Bansura, the Rebel City, the game world reacts. Bansura sits on opposite banks of a river too wide for a bridge. Religious dissidents founded it by rigging official rope-fords. If you supply them, they might survive a blockade, launch an economic rebellion, or copy your trade routes. A neighboring power might declare your trade illegal and seize your barge. The river turns invoices into wars.

The Map and the Seasons
The physical map is the core of the table experience. You mark settlements, hazards, safe landings, tolls, shrines, wrecks, ford ropes, rumors, markets, and iron contacts. In the fiction, this map is the most valuable item you own. NPCs will steal, copy, falsify, or fight over it. Rulers will demand it, and creditors will seize it.

Hazards and Tone
You face three types of threats. Human threats include wreckers, toll guards, military barges, smugglers, rival traders, and rebel agents. Natural threats include knife-fish shoals, reed crocodiles, river bulls, and shellback devourers. Undead threats include drowned hands and unburied pilots. If you ignore the Ritualist, you must deal with waterlogged hazards climbing over the rail.

The tone is practical fantasy. Mud, rope, oars, and draft matter. You use a shallow barge because a deeper vessel will split its hull on a reef. You row, pole, and tow because sails do not work in narrow reeds, gorges, or crowded docks.