And Watch an Economy Emerge

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TTRPG Economy Design: When Players Control the Market

Most RPGs hand you a table. Longsword: 21 gold. Healing potion: 67 gold. Plate armor: 666 gold. The book has decided. The market is fixed. Everyone pays the same, forever.

Sol Fracta ne fait pas cela.

Every productive building in the game — forge, farm, refinery, lab — has a control gauge of 10 points. Those points are distributed, at first, based on who contributed Vitale Energy during construction. You put in the most work? You own the most shares. Whoever holds 6 or more of those 10 points controls the building, which means they control access, and they control pricing.

The rulebook gives suggested price ranges. Not rules. Suggestions. Narrative flavor. The actual prices? That’s a conversation happening at your table, right now, between the people playing.

That’s the whole design.

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When I was building this system, the thing I kept coming back to was a simple question: who actually decides what things cost in a real market? Not a textbook market, a real one. The answer is consenting trade and whoever has enough leverage to make the other party say yes. That leverage comes from control over supply, from relationships, from threat, from alternatives, or the lack of them.

So I asked: what if the RPG reflected that instead of pretending a sword has a cosmically fixed value?

The result is basically Austrian economics on a colony planet. Carl Menger, Ludwig von Mises, the whole school: value is subjective, prices emerge from voluntary exchange between individuals who each have their own priorities. There’s no central authority (yet at least) deciding what a meal from the colony farm costs. There’s whoever controls the farm. And right now, that’s the player who poured the most EV into building it.

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The interesting part isn’t the pricing mechanic itself. It’s what the pricing mechanic makes possible.

Here’s a scenario I’ve seen in testing. Two players co-own a forge — one has 6 points, the other has 4. They price together by default, a kind of forced partnership. Then a third player starts acquiring EV in a competing project that could eventually threaten the forge’s position. Suddenly the 6-point player wants to buy out the 4-point player before that happens. The 4-point player knows their position is worth more now than it will be in three cycles.

We haven’t scripted any of this. There’s no “economic rivalry” encounter in the module. This is just three people responding to incentive structures.

Now scale that up. One faction controls the only operational farm. They start pricing food at a rate that makes survival expensive for independent colonists. Those independents have choices: pay, find alternatives, pool resources to build a competing farm, or apply pressure. Soft pressure looks like a boycott, a competing trade deal, a whisper campaign that costs the farm’s owner social influence. Hard pressure looks like sabotage. Or a hostile takeover — start accumulating EV points in the farm’s control gauge however you can.

“Join our cartel or operate alone” is a sentence that can come out of a player’s mouth. And it can mean something, because the cartel is real. The economic isolation is real. The choice has weight.

Good TTRPG economy design isn’t a fixed table for Sol Fracta, it’s a system where control of buildings determines the price of everything that comes out of them

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There’s a human tension underneath all of this that I think is the actual core of the design.

Every player has to decide, cycle by cycle, whether they want to maximize their personal position or contribute to collective capacity. Those aren’t always in conflict. The smartest players figure out how to align them: you contribute heavily to building the forge because being a major shareholder in critical infrastructure is worth more long-term than hoarding EV for personal gear. The contribution est the agenda.

But sometimes they are in conflict. You need to spend EV on your own survival right now, which means you’re not building toward control of anything. You need the food this cycle, so you pay whatever the farm owner is charging, which makes the farm owner stronger relative to you. Interdependence without coercion means the leverage is real but the exit is always theoretically available: you can always pay, trade, hire someone to craft for you, go without. You’re spending money instead of time, or time instead of money. The game doesn’t trap you, it just makes sure every choice has a real cost.

That’s not a feature I added on top of the system. That’s what falls out naturally when prices aren’t fixed by the book.

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I want to be honest about the design uncertainty here, because there is some.

A fully emergent player economy requires players who are willing to engage with it. If everyone at the table just wants to explore and fight, they’ll probably price everything at book suggestion and move on. That’s fine. The system doesn’t demand engagement, it rewards it. But it also means the depth only appears when players decide to reach for it.

What I’ve found is that the moment one player starts making strategic economic decisions, the others respond. It’s contagious. Someone prices food aggressively, suddenly everyone is thinking about their control stakes, their leverage, their dependencies. The economy doesn’t emerge from the rules alone. It emerges from one player at the table deciding to play it like a player. Game theory.

The book can’t manufacture that moment. But it can build the conditions where that moment happens, and then get out of the way.

No price table is going to generate a cartel war. No fixed exchange rate creates the scene where someone leans across the table and says “I’ll give you my control in the lab if you back me on the water contract.”

The rules don’t write those scenes. The players do. Because the rules told them: this is yours to decide.

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What does your TTRPG economy design look like, and have you tried letting players set prices based on who controls production rather than a fixed table?