The Best Free Tools for RPG Worldbuilding

The best free tools for RPG worldbuilding are World Anvil, LegendKeeper, Kanka, Obsidian, and Notion.^{1 2 3 4 5} Each draws the free line in a different place. The honest question is not which tool is best, but which version of "free" survives the campaign you are actually running.

These five tools resolve one job — keeping a sprawling invented world consistent across months of play — in five different commercial shapes. World Anvil is a worldbuilding database launched in October 2017 by Janet Forbes and Dimitris Havlidis, and its homepage reports "3,500,000+ Creative Worldbuilders."^{1 6} LegendKeeper won the 2024 ENNIE Gold for Best Aid/Accessory, Digital, and calls itself "the ultimate collaborative worldbuilding tool for game-masters and storytellers."^{2 7} Kanka, a tiny team behind 400,000-plus users, describes itself as "a community driven world building website."^{3 8} Obsidian and Notion are general note tools pressed into campaign service. This post pulls the prices, free-tier caps, and ownership terms verbatim from each maker's own pages.

What is the best free tool for RPG worldbuilding?

There is no single best free tool. There is a best tool for a posture: World Anvil for a deep structured database, LegendKeeper for map-and-wiki polish, Kanka for the most generous purpose-built free tier, Obsidian for a local plain-text vault, and Notion for flexible tables.^{1 2 4 5 9} Pick by campaign, not by ranking.

The word "free" hides three different bargains. World Anvil, LegendKeeper, and Kanka are purpose-built RPG platforms with a free tier and a paid ceiling — you start free, and a growing world eventually meets a cap or a premium feature. Obsidian is a whole app that is "free without limits," where the writing surface itself costs nothing and only optional Sync is paid.⁵ Notion sits in between: a generous free workspace with documented limits.⁹ A game master who reads "free" as "free forever, every feature, no asterisk" has a shorter list than the roundups suggest, and this post is about which asterisk applies where.

How does World Anvil compare on price?

World Anvil's free Freeman tier is real but bounded: its pricing table caps free accounts at 2 worlds and 42 articles — at most 5 of them drafts — with 100 MB of storage.¹⁰ Paid Guild membership unlocks the rest: Master $58 a year, Grandmaster $105, and the professional Sage tier $300.¹¹

World Anvil is the most feature-dense tool in this roundup, and the density cuts both ways. It carries structured templates for characters, locations, religions, ethnicities, and magic systems, plus an interactive map engine, a timeline builder, and an RPG campaign layer with player-facing pages.¹ Jason Hamilton, reviewing it for Kindlepreneur, wrote that "it's hard to find anything related to worldbuilding that this platform cannot do" — and in the same breath that "it has a sharp learning curve, which could be a barrier for many authors."¹¹ The 42-article free ceiling is generous for a single one-shot and tight for a multi-year campaign. World Anvil runs WorldEmber, the annual December challenge it started a month after its October 2017 closed beta; in co-founder Janet Forbes's own account, "it was so popular we went from closed beta to open beta because we couldn't keep up with handing out invitations by hand."⁶ For a game master who wants the deepest database and will pay for it eventually, World Anvil is the most complete answer here.

How does LegendKeeper compare on price?

LegendKeeper's free Basic tier lets you view and export projects and collaborate on worlds others own, but building your own world runs through Pro at $9 a month or $90 a year, after a 14-day free trial.² In practice, LegendKeeper is a paid tool with a free viewer and a trial, not a free-tier app.

What the Pro tier buys is polish. LegendKeeper, tagline "Build worlds like a pro," organizes lore as a wiki "that magically connects and grows with your story," and pairs it with interactive maps that zoom "from continents to crypts," visual timelines, whiteboards, and real-time collaboration.^{2 7} It won the 2024 ENNIE Gold for Best Aid/Accessory, Digital, and reports "200K+" creators, "26M+" pages created, and "2M+" pins dropped.⁷ The free path is the narrowest of the five tools: you can read and export a shared world, but the editor itself is behind the paywall once the trial ends. For a game master who already knows they will pay for the best map-and-wiki experience and wants to try it first, LegendKeeper is the premium pick. For a strictly-free workflow, it is the weakest fit on this page.

How does Kanka compare on price?

Kanka's free Kobold tier is the most generous purpose-built tier here: its pricing page lists "Unlimited entries," "Unlimited campaigns," and "Everything you need to build free forever," with paid Owlbear, Wyvern, and Elemental tiers at $4.99, $9.99, and $24.99 a month.^{4 12} Premium campaigns sit behind those tiers; one free campaign carries a full world.

Kanka is built by what its own about page calls "a tiny team," and describes itself as "a community driven world building website."^{3 8} It offers roughly twenty modular entity types — characters, locations, organizations, families, items, journals, quests, calendars, timelines, maps — and a permissions system for hiding spoilers from players.¹² The platform reports "400,000+ users" across "90+ countries" and "9 million+ entries" since its October 2017 launch.⁸ The free tier raised some friction in 2022, when unboosted campaigns were capped at 10 members and 300 entities, a change the team announced openly on its blog.¹³ What survives is a tier Kanka now describes as "not a trial" — "All core features, unlimited campaigns, unlimited entries" — with the paid tiers gating premium campaigns and advanced features rather than core use.³ For a game master who wants a purpose-built RPG manager and a usable free plan, Kanka is the strongest free-tier value in this roundup.

How do Obsidian and Notion compare?

Obsidian and Notion are general note tools, not RPG platforms, and that is the trade. Obsidian is "free without limits" and stores worlds as plain Markdown files on disk, with optional Sync at $4 a month annually.⁵ Notion's free tier is capped at "Up to 5 MB" file uploads and "7 days" of page history.⁹

The advantage of a general tool is ownership and portability; the cost is that maps, timelines, and player-facing pages are something you build yourself rather than features you toggle on. Obsidian's free path is the deeper of the two — a local vault of .md files with a large plugin ecosystem, "No sign-up required," and "No strings attached."⁵ Many game masters run entire campaigns this way, linking characters, locations, and sessions with double-bracket wiki-links. Notion trades plain text for flexible databases and a hosted workspace, useful for tracking initiative, loot, and quest status in tables, at the price of a proprietary block model; co-founder Ivan Zhao wrote in September 2024 that Notion "might have touched & helped 100M of you in your work and lives."¹⁴ Neither ships a map engine, and only one of them leaves you a folder of files you can read without the app.

Side-by-side comparison

The table below pulls nine dimensions verbatim from each maker's own pricing and product pages, with no marketing language promoted to fact. Read down a column to understand one tool's free posture; read across a row to understand a single trade-off, like maps or file ownership, across all five contenders.

The table is not the verdict. The verdict is whichever row you will still care about in the third year of the campaign.

Who should use each tool?

Match the tool to the campaign, not the feature count. World Anvil suits the game master who wants the deepest structured database. LegendKeeper suits the one paying for the best maps and wiki. Kanka suits the one wanting a real free tier. Obsidian suits the one who wants to own the files, Notion the one who lives in tables.^{1 2 4 5 9}

Concretely: choose World Anvil if you run a long campaign, want religions and ethnicities and magic systems as typed templates, and will eventually pay $58 a year for room to grow past 42 articles.¹¹ Choose LegendKeeper if interactive maps and a polished player-facing wiki are the point and $90 a year is acceptable.² Choose Kanka if you want twenty entity types and a free tier its makers call "not a trial."^{3 12} Choose Obsidian if you want a local plain-text vault with wiki-links and no sign-up.⁵ Choose Notion if you live in tables and want initiative trackers and loot databases more than lore pages.⁹

Who should NOT use a general note app?

A general note app is the wrong tool for several legitimate RPG workflows, and it is more useful to say so than to make one option win every row. If your campaign lives on interactive maps, World Anvil, LegendKeeper, or Kanka is the right answer.^{1 7 12} Pick the tool that matches the table you actually run on.

If you want a built-in map engine that lets you "zoom from continents to crypts" with linked markers, choose LegendKeeper or World Anvil.^{7 1} If you want typed worldbuilding templates for religions, ethnicities, and magic systems out of the box, choose World Anvil.¹ If you want a permissions system that hides spoilers from players inside the same shared world, choose Kanka or LegendKeeper.^{12 7} If you want a deep plugin ecosystem and a graph view over your vault, choose Obsidian.⁵ A plain-Markdown folder ships no map engine, no player portal, and no plugin marketplace — that surface is small on purpose, and it is the right trade only when the world is plain text, single-author, and meant to outlast the app that opened it. Choose a purpose-built platform for the workloads above without apology. The folder-and-wiki-link system that makes any Markdown tool work for a campaign is laid out in our guide to worldbuilding in Markdown.

Frequently asked questions

Six questions surface in almost every game master's search for a worldbuilding tool — about the best free option, World Anvil versus LegendKeeper, whether LegendKeeper is free at all, whether Obsidian works for a campaign, Kanka's free limits, and ownership. Each answer below carries the verbatim terms from the makers' own pages cited above.

What is the best free RPG worldbuilding tool?

There is no single best. Kanka has the most generous purpose-built free tier — "Unlimited entries," "Unlimited campaigns," "Everything you need to build free forever."⁴ Obsidian is "free without limits" as a local Markdown vault.⁵ World Anvil's free Freeman tier caps at 2 worlds and 42 articles.¹⁰ Pick by whether you need maps, templates, or plain files.

Is World Anvil or LegendKeeper better for a campaign?

Both are strong; they differ on free access and focus. World Anvil has a real free tier and the deepest structured templates, but a sharper learning curve.^{10 11} LegendKeeper won the 2024 ENNIE Gold and leads on map-and-wiki polish, but its free Basic tier only views and exports — building needs Pro at $9 a month.^{2 7}

Is LegendKeeper free?

Only for reading and exporting. The free Basic plan lets you "View & export all your projects" and "Collaborate with project owners," but creating and editing your own world runs through Pro, at "9 USD per month or 90 USD per year."² Every new account gets a trial that is "Free for 14 days, no credit card required."²

Can I use Obsidian for RPG worldbuilding?

Yes, and many game masters do. Obsidian is "free without limits," stores your world as plain Markdown files on disk, and links characters, locations, and sessions with double-bracket wiki-links.⁵ It ships no map engine or player portal, so those are plugins or manual work. The trade is ownership: the files are yours and readable without the app.

Is Kanka really free, and what are the limits?

Kanka's free Kobold tier lists "Unlimited entries," "Unlimited campaigns," and "Everything you need to build free forever."⁴ The paid Owlbear, Wyvern, and Elemental tiers, at $4.99, $9.99, and $24.99 a month, add premium campaigns and higher limits.¹² Unboosted campaigns were capped at 10 members and 300 entities in 2022, but a single free campaign still runs a full world.¹³

Do I own my world if the tool shuts down?

It depends on the storage model. World Anvil, LegendKeeper, Kanka, and Notion host your world and let you export it from the platform; LegendKeeper's free Basic plan exists precisely so you can "View & export all your projects."^{2 9} Obsidian instead stores plain .md files on your own disk.⁵ A hosted database is convenient; a folder of plain files is portable. Export often whichever you choose.

The world outlasts the tool

The best free RPG worldbuilding tool is the one whose version of "free" matches the campaign you will still be running in three years. World Anvil, LegendKeeper, and Kanka are purpose-built and excellent; Obsidian keeps the world in files you own, Notion in tables you can query. Choose the asterisk you can live with.

MNMNOTE (mnmnote.com) opens a plain-Markdown world in your browser, with no account and no install.

References

All URLs re-verified live as of 2026-09-23. World Anvil serves 403 to automated fetch, so its homepage and pricing figures are quoted from dated Internet Archive snapshots of its own pages.