The Ultimate World Building Companion

Master Your World

The free campaign manager, worldbuilding wiki and virtual tabletop for D&D and every tabletop RPG. Create epic campaigns, craft unforgettable characters, and chronicle legendary events across time and space.

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World Building: Craft Your Realm

Build immersive worlds with powerful organizational tools designed for ambitious storytellers.

Epic Campaigns

Detailed campaign settings with rich lore, custom imagery, and invite codes - manage many campaigns at once.

Hierarchical Locations

Nest locations from continents down to single rooms, each with its own resources, images, and scenes.

Legendarium

A built-in campaign wiki for your lore, with visibility controls to keep secrets or share publicly.

Custom Calendars

Craft calendars with custom months, eras, seasons, and even multiple moons with accurate orbital phases - all in your world's own reckoning.

Factions & Organisations

Courts, guilds, cults and cartels - each with a charter, goals, members, and ties to the events they set in motion. Hidden factions stay invisible to players until you say otherwise.

Characters & Stories: Bring Heroes to Life

Deep character management with dynamic sheets, inventories, relationships, and rich interactions.

Living Characters

Create PCs and NPCs with fully customizable sheets. Use community templates or build your own with dynamic fields.

  • Dynamic template system
  • Community template sharing
  • Version-controlled sheets

Relationship Webs

Map alliances, rivalries, family ties, and secrets. Track relationship strength and type at a glance.

  • Bidirectional relationships
  • Family & faction tracking
  • Relationship scoring

Inventory & Items

Equipment tracking, quantities, weight, currency, and hierarchical organization - color-coded for clarity.

  • Weight & currency tracking
  • Equipment status
  • Parent-child item nesting

Quests & Objectives

Global and personal quests with text or counter objectives, progress tracking, rewards, and sub-quests.

  • Counter objectives
  • Quest status tracking
  • Sub-quest hierarchies

Tactical Play: Command the Battlefield

Full-featured battle maps with fog of war, grid systems, layered elements, and real-time collaboration.

Interactive Battle Maps

A rebuilt engine for buttery-smooth maps - square, hex, isometric, or free-form grids, layers, undo/redo, animated tokens, and atmospheric effects like aurora, leaves, and birds.

Fog of War

Reveal the map with any geometry - split and carve fog shapes, and preview exactly what your players see.

Initiative & Combat

Four initiative modes, on-token HP/mana trackers, effect bubbles, and an active-turn indicator - players can end their own turn.

3D Dice Roller

A realistic 3D physics dice tray on the map, with custom colorsets and rolls synced live to the whole party.

Real-Time Collaboration: Play Together, Anywhere

Everything syncs instantly. Set the mood, see cursors, chat in real-time - as if you're at the same table.

Atmosphere Mixer

Shape a room by feel, not by playlist - dial in mood, tension and crowd, pick the space you are standing in, and let nineteen world lanes settle into place. Scenes can carry their own atmosphere and shift it the moment you move.

Live Map Collaboration

See cursors in real-time, ping locations, share viewports, and watch tokens move as they're dragged.

Campaign Chat

Rich real-time chat with public rooms, private groups, DMs, reactions, typing indicators, and in-character mode.

Scenes & Sessions

Organize play as a hierarchical scene tree - linked locations, maps, and sounds, with prev/next navigation and per-character visibility.

Session Planner

Plan game nights with shared availability, RSVPs, player groups, and automatic Discord reminders before every session.

Prep & Library: Come to the Table Ready

The work you do between sessions - staged scenes, reusable items, imported rulebooks, and a journal of what actually happened.

GM Stage

Your private overview: prepped scenes waiting in the wings, who is on stage right now, a searchable codex, and a world clock you can scrub to move time itself.

  • Scene staging chain
  • World-clock scrub
  • Chronicle timeline band

Item Library

Save any item - with its whole subtree - as a reusable template, group templates into shelves, and share a collection by link. GMs curate exactly what their players can pull from.

  • Reusable templates
  • Shareable collections
  • GM-curated per campaign

5e Content Import

Bring in a whole shelf of sourcebooks at once. Pick what to keep, watch it land, and undo any import in a single click if you change your mind.

  • Bulk 5etools import
  • Choose before committing
  • One-click undo

Campaign Journal

Everyone keeps their own ledger of the session - private by default, shared when you choose, with mentions that link straight back to the people and places involved.

  • Private by default
  • Mention-linked entries
  • Comments & reactions

Chronicle & Track: Record Every Moment

Powerful timeline and event tools to maintain perfect continuity across your saga.

Timeline & Events

Plot events with durations, eras, and resolution status, then weave them into cause-and-consequence chains across your custom calendar.

  • Event chains & eras
  • Resolution tracking
  • Location & character links

Events Mind Map

Switch from list to an interactive canvas - auto-laid-out events with bidirectional links you can explore, select, and rearrange.

  • Interactive canvas
  • Auto-layout
  • Relation inspector

Campaign Resources

Track artifacts and treasures. Tag, search, and associate resources with locations and events.

  • Tag-based organization
  • Full-text search
  • Multi-entity linking

Eras & Ages

Frame your history in named eras and ages - with seasons, festivals, and epochs - so every event lands in the right age of your world.

  • Named eras & epochs
  • Seasons & festivals
  • Era-aware filtering

Frequently asked questions

What is WorldMaster RPG?

WorldMaster RPG is a free online campaign manager, worldbuilding wiki and virtual tabletop for tabletop role-playing games. Game masters build their world, characters and history, then run sessions on live battle maps with their players.

Is WorldMaster RPG free?

Yes. The core is free for game masters and players: campaigns, worldbuilding, character sheets, battle maps, fog of war and 3D dice. Optional Patreon tiers support development and unlock extras such as genre UI skins.

Which tabletop RPGs does it support?

It is system-agnostic. Character sheets are built from templates, so it works for D&D 5e, Pathfinder, Symbaroum, Call of Cthulhu or a homebrew system. D&D 5e groups can also bulk-import sourcebook content.

Is it a virtual tabletop or a worldbuilding tool?

Both. Most tools are either a worldbuilding wiki (like World Anvil or Kanka) or a virtual tabletop (like Roll20 or Foundry VTT). WorldMaster RPG keeps your lore, locations and timeline in the same campaign as your battle maps, initiative and dice.

Do my players need to install anything?

No. WorldMaster RPG runs in the browser. Players join with an invite link and a free account.

Can I keep secrets from my players?

Yes. Lore entries, location sections, factions and events all have visibility controls, and fog of war hides the parts of a map your players have not explored.