A World Builder That Keeps Itself Current
Saga20 does everything you expect from a campaign world builder. Characters, locations, factions, maps, custom sections, player visibility. Then it does the part nobody else does: it records your session and writes what happened back into those pages, so your world is never twelve sessions out of date again.
Free tier. No credit card. Import your existing world.
Most people hunting for a World Anvil alternative are not unhappy with the worldbuilding. They are unhappy with the upkeep. Every wiki in this category asks you to type the campaign into it after the fact, and that is the part that quietly stops happening around session ten. Saga20 is the one that closes the loop.
How they compare
World Anvil is excellent, and where it wins this table says so.
| Feature | World Anvil | Kanka | Saga20 |
|---|---|---|---|
| Build and edit your world by hand | |||
| Custom entry types and sections | |||
| Page templates for new entries | |||
| Interactive maps | |||
| Control what players can see | |||
| Share your world on a public link | |||
| Private DM notes inside a shared page | |||
| Open a single secret to one chosen player | |||
| Relationship graph across the campaign | |||
| Players get their own character pages | |||
| Records your session and summarizes it | |||
| Wiki pages update from what you played | |||
| Free tier |
Compared on publicly documented features, August 2026. World Anvil ships a larger library of prewritten article types and is built around growing a public readership for your world, which is a different goal to running a campaign.
Your campaign writes itself into the world
Build as much of your world up front as you like. Saga20 gives you the entries, the custom sections, the maps and the visibility controls to do it properly, and plenty of DMs spend happy weeks there before session one.
Then you play, and the campaign starts generating its own history. The party names the innkeeper and the name sticks. Somebody promises a favor to a faction in session 4 and the group is still arguing about it in session 19. In every other wiki, that only exists if you sit down afterwards and type it in.
Saga20 records the session and writes it in for you. The summary, the new characters, the locations they visited, the factions they upset. Your world stops being the version you planned and becomes the version you actually played, without anyone doing homework for it.
See it working on real campaign examples, or look at the world builder in detail.
Best for you if...
- You want to grow a public readership and following for your world
- You want the largest library of prewritten article types
- Worldbuilding is the hobby, and the campaign is secondary
Best for you if...
- You want a real world builder that does not fall behind the campaign
- Your players keep forgetting the NPC from session 4
- Nobody at your table wants the job of writing everything up
- You want a public wiki your group can read without making an account
- You want recaps posted to Discord the moment a session ends
Common questions
Bring your world across in an afternoon
Saga20 imports what you already wrote, then keeps it current from every session you play. Free to start.