Forge Your Campaign.
Command Your World.

An AI-powered tabletop RPG platform that replaces scattered tools with one unified experience. Campaign management, live sessions, and a narrator that adapts to your story.

Open Builder Join as Player

What is Demons & Dogs?

Demons & Dogs is a digital tabletop RPG platform built for in-person D&D groups. It acts as a DM co-pilot—not a replacement—bundling campaign management, real-time session play, and AI narration into one place.

Instead of juggling D&D Beyond, Roll20, Notion, Discord, and spreadsheets, your table gets a single platform where an AI narrator generates cinematic prose that adapts to your tone, your world, and your party's choices in real time.

Run live sessions on interactive maps with fog of war, manage your world through a rich wiki, and build encounters with real-time difficulty balancing—all while the DM stays in full creative control.

Demons and Dogs campaign overview dashboard showing campaign details, characters, and session management

Powerful Tools for Every Table

Everything a game master and their players need, designed from the ground up for tabletop RPGs.

AI-Powered Narration

A built-in LLM narrator generates immersive story prose as your campaign unfolds. 10 tone presets, streaming text, and "How Do You Want To Do This?" killing blow moments.

Interactive Campaign Maps

Drag-and-drop tokens, dynamic fog of war, grid overlay with snap-to-grid, and real-time position sync across all connected players.

Real-Time Multiplayer

SignalR-powered live sessions let every player see actions, dice rolls, and map changes instantly. No refresh needed, no sync issues.

Campaign Wiki

An interconnected wiki for your world's lore. Cross-link articles, control visibility per player, hide DM secrets, and track backlinks across your world.

Combat & Encounters

Full initiative tracking, HP management, condition markers, and a difficulty calculator with XP budgets. Build encounters with real-time balance feedback.

NPC System

Track NPC emotional states, schedules, and disposition. Generate in-character dialogue with AI that respects each NPC's personality and relationship with the party.

Character Sheets

Full digital character sheets with stats, spells, inventory, conditions, and XP tracking. Mobile-responsive for phone use at the table.

Homebrew Balance Tools

AI-powered analysis for custom spells, items, and monsters. Get CR recommendations, balance feedback, and comparable official content suggestions.

Factions & Relationships

Dynamic faction reputation tracking per character. Map NPC relationships, monitor standing changes, and get AI-driven relationship suggestions.

AI Content Generation

Generate plot hooks, NPCs, locations, shop inventories, taverns, historical events, and character backstories on demand. All context-aware to your campaign.

See It in Action

Real screenshots from the Builder and Player apps.

Campaign dashboard with campaign cards
Campaign DashboardBuilder App
Live combat session with map and tokens
Combat SessionBuilder App
Wiki article editor with markdown
Wiki EditorBuilder App
NPC management panel with state tracking
NPC PanelBuilder App
Player session view with narration and combat
Live SessionPlayer App
Player map view with tokens
Player MapPlayer App

Featured Adventure: Grammy's Country Apple Pie

A complete, ready-to-play one-shot included with every install. Select it from the campaign wizard and get a full adventure with characters, maps, NPCs, encounters, and a DM guide — no setup required.

Campaign wizard showing Featured Adventures with Grammy's Country Apple Pie selected
Featured AdventuresCampaign Wizard
Grammy's Country Apple Pie campaign overview with stats and session prep checklist
Campaign Overview4 Characters, 5 NPCs, 3 Encounters
NPC management showing Tyndareus, Mac the Treant, Dryads, Grubfist, and Goblin Bakers
NPC Roster5 NPCs with Emotional States
Player app session lobby with active campaigns
Player LobbyJoin & Play

All combat is avoidable. Pacifist approaches are valid and encouraged. Perfect for introducing new players to the platform.

Try It Now

Two Apps, One Platform

A dedicated experience for the Dungeon Master and every player at the table.

Campaign Builder

For the Dungeon Master

Your command center for world-building, session prep, and running the game. Build campaigns, design encounters, manage NPCs, and control the narrative.

  • Campaign Management
  • Wiki System
  • Encounter Builder
  • NPC Tracking
  • Map Editor
  • AI Narration
  • Session Recaps
  • Content Generation
Open Builder

Player App

For the Adventurer

Your seat at the table. See narration unfold in real time, roll dice, track your character, and interact with the world from your phone or laptop.

  • Live Narration Feed
  • Character Sheet
  • Dice Roller
  • Combat Tracker
  • Spell Slots
  • Interactive Map
  • Action Input
  • Session Recap
Join Session

Ready to Roll Initiative?

Open the Builder to create your campaign, or join an active session as a player.

Open Builder Join as Player
Trevor Reeves
Software Engineer
GitHub LinkedIn

Game Arcade

Take a break and play some games. All built with HTML5 Canvas.

WASD or Arrows to move Dodge fireballs • Collect gold