Campaign manager for gamemasters
Grimoire is a campaign manager built like a database. Your NPCs, factions, places, and quests are records that know each other. The graphs draw themselves, the wiki links to the records, and your players see exactly the world they have earned.
See every feature, and how they fit together →
Free to start Players always free Any system, any genre
Most campaign tools are a wiki with better folders: pages that mention your NPCs by name and nothing that knows the same NPC is on page nine and page forty. Grimoire stores the world as typed records with real relationships, so the political web, the timeline, and the map are views of what you already entered, the wiki links to the records by name, and the player portal shows each reader exactly their slice.
Four lenses on one world
Each facet is a different way of looking at the same campaign. None of them asks you to type anything twice.
The database
Fourteen typed categories with the fields a GM actually needs, already built. NPCs know their factions. Locations know their parents. Quests have a status you can filter the whole campaign by.
See the campaign database →The graphs
Political webs, timelines, and geography are projections of the records, not diagrams you maintain. Record a relationship once and it appears everywhere it belongs.
Explore the knowledge graph →The wiki
Lore, handouts, and session notes in a block editor the whole table can type in at once. Mention any entity with @ and the page links to it; the record lists every page that mentions it back.
Tour the campaign wiki →The player portal
Every record and every wiki block carries a visibility tier, filtered server-side. Reveals happen through play, players get a party wiki and a private one each, and they are always free.
See the player portal →Twenty sessions in
Every campaign starts as one document and ends as forty. Somewhere in there the abbess got three spellings, the map is in a chat thread, and "where did I write that" became part of prep. Same campaign, two ways of keeping it.
Any system, any genre
Pick a genre and the whole app reshapes: category names, field vocabularies, tags, tone. A pantheon in one game is a corporate board in another; a war rig and a warhorse are both Vehicles. Stack facets like Cyber, Survival, or Political Intrigue on top and dial magic and technology until the setting fits.
Try the genre picker →Optional
Grimoire runs fully without a single AI feature. When you want it, Grimoire MCP connects your campaign to Claude, ChatGPT, or any MCP-compatible client with one sign-in. It reads the same records, graphs, and wiki pages, under the same visibility rules, and writes back with the same chips. You bring your own client, so there is no token markup and no model lock-in.
See how Grimoire MCP works →Playing solo with Claude or ChatGPT as the narrator? How to run an AI D&D campaign that stays consistent.
Pricing
We never charge for AI tokens. Bring your own client. Pay only for campaign management, and only when you are ready.
Free
Full features, limited capacity
$0forever
From Oct 5, 2026 the free tier caps at 100 entities and 25 MB per campaign. Nothing you have already created is ever deleted; above the cap you simply cannot add more.
Early-supporter pricing
Pro
Everything, unlimited
$10$5/ month
Or $50 a year. Lock in $5 for as long as you stay subscribed. Standard pricing returns as Grimoire grows.
Team
Shared worlds and collaboration
Coming soon
Players are free on every plan, no seat limit.
FAQ
No. D&D is the most common system on Grimoire, but nothing in it is rules-specific. Pick Fantasy, Sci-Fi, Horror, Post-Apocalyptic, Modern, Superhero, or Historical and the category names, field vocabularies, and tone reshape to fit. A war rig and a warhorse are both Vehicles; the structure underneath is the same.
A wiki remembers pages. Grimoire remembers how it all connects. Your NPCs, factions, places, and quests are typed records with real relationships between them, so the political web, the timeline, and the map are generated from what you already entered, and the wiki you write links to those records by name.
Yes. The free tier is one full campaign with the knowledge graphs, the wiki, the player portal, Grimoire MCP, and export, with no credit card and no time limit. From Oct 5, 2026 the free tier caps at 100 entities and 25 MB of storage per campaign, and nothing already created is ever deleted. Pro adds unlimited campaigns and entities, custom fields, unlimited custom graphs, and 5 GB of storage.
No. Players are free on every plan with no seat limit. They join from an invite link with a standard free account, and one account works for every campaign they play in or run.
Only if you bring it. Grimoire runs fully without a single AI feature. If you already use Claude, ChatGPT, or another MCP-compatible client, Grimoire MCP lets it read and write your campaign as structured data under the same visibility rules. We never charge for AI tokens.
Any time, on every plan. Full campaign export in standard formats: entities, wiki pages as markdown, tables as markdown grids. If a subscription lapses your world stays readable.
Every session after is prep you have already done.
No credit card. Players always free. Compare Grimoire to the field if you are switching, or see how a real campaign compounds session by session.