How to organize a sandbox RPG campaign
Keep notes on nearby places, what people want, and the leads the party has heard. Update those notes as the group explores.
The short answer. Start with a few places the party can reach and the people involved in their problems. Record the leads the players actually heard. After each session, update what the party changed, and add more of the world only as they explore it.
The party agreed to look for a missing courier. They questioned the innkeeper and bought supplies. Then someone asks, "Could we go see what is happening at the salt mine first?" Your notes need to help you run that visit, not force them back onto the route you expected.
Start with places the party might visit soon
Say your starting town is Bellwater. There is a salt mine outside town, a courier route through the hills, and a ruined observatory. For now, each destination needs enough detail to start a scene. The mine's entry could contain:
- Place: Bellwater salt mine, a mile north of town.
- What is visible: Workers have blocked the entrance with overturned carts.
- What changed: The lower gallery flooded three days ago. Two workers are still missing.
- People in conflict: Mara, the strike leader, wants help getting them out. The owner wants production restarted before the next shipment.
- Open problem: Nobody has agreed to pay for a new pump.
That gives you a place to arrive, someone to talk to, and a problem with several possible responses. Add the mine's history if it becomes relevant to play.
If you run a hexcrawl, add the hex number. If it is a city campaign, add the district. Either way, keep the location easy to find while everyone is waiting for you to describe it.
Give the people involved something to do
"The mine owner is greedy" gives you less to work with than "The mine owner will lose his shipping contract if work does not resume by Friday." The second note tells you why he might bargain, lie, or send for guards.
For each group that matters, write what it wants, what it can use, and its next likely move. A short note is enough.
If talks fail, the owner sends to the next town for hired guards. Mara will let rescuers through the barricade, but she will not let replacement workers enter.
You decide when those actions happen, using your game's rules or your judgment. Adjust the next move when the party gets involved. They might repair the pump, expose the owner, or convince the workers to abandon the mine altogether.
For recurring people, keep their names and motives in one place.
Write down the leads the players actually heard
Keep a short shared list of leads, including where each came from. "The innkeeper says the missing courier carried letters from the striking miners" is much more useful than "courier quest."
If a miner claims the flooded gallery is haunted, record it as a claim. You may know there are no ghosts down there. The players only know what the miner said, and they might decide to investigate anyway.
At the end of the session, ask where the group expects to go next. Their answer gives you a sensible starting point for prep, even though they can change their minds.
Update the mine after the session
Suppose the party follows the courier route after all. They find the missing letters and discover the mine owner had them intercepted. That discovery gives them a reason to return to the mine.
Say they deliver the letters to Mara, then confront the owner. Write those events in that session's notes. On the owner's page, add that the party has proof and he knows it. Update Mara's page too: she trusts them enough to let them through the barricade.
Before the next visit, put the current situation at the top of the mine entry:
Letters delivered. Mara will admit the party. The owner knows they exposed him. The pump is still broken, and both workers are still missing.
Keep the earlier session notes as history. They preserve exactly what the owner promised before the situation changed.
Common questions
What if the players go somewhere I haven't prepared?
Start with what they can see on arrival, someone who wants something, and one immediate complication. You can take a short break to work that out. Jot down any names, promises, and discoveries you establish during play so the next visit builds on them.
Keeping Bellwater in Storywright
In Storywright, you could give the mine, Mara, and the owner separate entries in the Drafting Table, then link the people to the mine. Keep the intercepted letters' explanation in GM notes and share the mine description the party has seen.
Session notes hold the trip through the hills, while the mine entry holds the current situation. When somebody says, "Let us go back to the mine," you have a place to start.