AI Worldbuilding Partner
A partner who remembers every corner of your world.

Worldbuilding is the part of writing where most projects collapse. The notes get scattered. The geography stops making sense. The factions you invented in chapter two contradict the magic system you set up in chapter five. Soulit's worldbuilding partners help you keep it all coherent: ask questions, hold contradictions, and stress-test the corners of your world before they break.
What a worldbuilding partner does
It asks the questions you forgot. "You said the river runs east — but the city's grain trade depends on western imports. Where's that coming from?" "Two of your factions have the same color symbol. Is that intentional?" "What's a normal Tuesday for someone who isn't a hero?" Worldbuilding gets stronger when someone keeps asking these.
What it's good for
Fantasy and sci-fi novels in early outline. TTRPG campaigns where the party is going off-script and you need to know how the next town reacts. Solo journaling RPGs where you're improvising both sides. Video-game narrative design when you need a setting that holds together. Comics, screenplays, anywhere a fictional world has to feel lived-in.
How to start
Describe what you have so far — geography, time period, magic-or-tech, key tensions. One paragraph is enough; the partner will ask follow-ups. Then iterate: bring scenes, characters, choices, and let the partner stress-test them. Many users keep a single long-running conversation as their "campaign bible" they can talk to. Free to start.
Frequently asked questions
- Will it generate a whole world for me?
- It can sketch one, but the value comes from iteration — you bring an idea, it asks questions, you refine. The best worlds are still the ones the writer builds; the partner just keeps the threads coherent.
- Does it work for established settings (D&D, Star Wars, etc.)?
- Soulit doesn't roleplay copyrighted IP. For your own world inspired by those settings, absolutely.
- Can it remember a campaign that's run for months?
- Yes. Conversations build context. For long campaigns, anchor key facts explicitly so they stay top-of-mind: "remember the king's name is Elred and he died in chapter 4."
- Is this private from other users?
- Yes. Worldbuilding conversations are private and not used for training.