How it works
A seeded generator places rooms, connects them with passages, adds optional features, and checks that every important room is reachable.
Free browser-based cartography
Castle Map Generator
Draft connected halls, chambers, and defended routes for a fantasy stronghold.
Map studioDesigned for the table
Your generated map
The Ember Vault
Seed EMBER-42 · 40 × 40
100%
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Field notes
Using this castle map generator
Draft connected halls, chambers, and defended routes for a fantasy stronghold. The seed records the layout. Keep it to reconstruct a map later, or share the link with your group.
Good uses
Keeps, fortresses, and siege encounters.
Customization tip
Try larger rooms and straight corridors to suggest planned architecture.
Explore locations
Map types
Dungeon Map GeneratorCreate branching rooms and passages for exploration, clues, and discoveries.Battle Map GeneratorBuild a gridded encounter space with clear routes, cover opportunities, and tactical choices.Fantasy Map GeneratorSketch an original fantasy location, from keeps and ruins to hidden sanctums.Random Dungeon GeneratorTurn a seed into a repeatable layout for quick preparation and spontaneous play.Cave Map GeneratorCarve winding passages and irregular chambers for a natural underground site.Castle Map GeneratorDraft connected halls, chambers, and defended routes for a fantasy stronghold.Crypt Map GeneratorCreate compact burial chambers, secluded rooms, and secret routes.Tavern Map GeneratorLay out a social location with gathering rooms, service areas, and back routes.Temple Map GeneratorDesign a ceremonial complex with shrines, side rooms, and a central destination.Sewer Map GeneratorTrace a maze of channels, service rooms, and concealed access points.Mine Map GeneratorGenerate excavated chambers and connecting tunnels with branching work areas.Wizard Tower Map GeneratorPlan a magical tower floor with chambers, studies, and a final ritual space.
Free seasonal adventure
The Vanishing Harvest
A complete 2–3 hour harvest mystery with six original downloadable battle maps.
Read the adventureMore for your campaign
Name your next character or location
Generate original fantasy names for characters, NPCs, towns, taverns, and parties, then copy your favorites for the table.
Open Name GeneratorField guides
Learn to make better maps
Use the generator with practical guides to layouts, encounters, and exports.
Map designHow to Create a Dungeon Map That Plays WellA detailed guide to turn a blank grid into a coherent exploration site, with a worked example, settings, export checks, and practical table tests.
Map designHow to Design Better Dungeon LayoutsA detailed guide to improve an existing dungeon without adding unnecessary rooms, with a worked example, settings, export checks, and practical table tests.
PlanningHow Many Rooms Should a Dungeon Have?A detailed guide to estimate a practical room budget for your table, with a worked example, settings, export checks, and practical table tests.Common questions
Frequently asked questions
Is the generator free?
Yes. You can generate, edit, print, and download maps without an account.
Can I recreate the same map?
Yes. Use the same seed and settings, or save the share link.
Can I use a map in my campaign?
Yes. Generated layouts use this site's original procedural geometry. You can download and use your maps in tabletop sessions.
Does it work on mobile?
Yes. Settings and tools become expandable panels on smaller screens.