Dungeon Mirror is a battlemap studio for the DM. Build and run the map on your screen, open a clean map-only Display 2 window, and share it with your players in Discord. You buy it once. Your players buy and install nothing.
Draw with a pen or mouse, fill terrain, drop walls and doors, place tokens and stack floors. Everything stays on your PC.
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Open Display 2
One click opens a synced, map-only window. Move it to your second monitor and press F11. Your tools and initiative tracker stay with you.
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Share it in Discord
Screen-share the Display 2 window in your voice channel. Players just watch the stream: no accounts, downloads or purchases.
Features
Everything the DM needs. Nothing the players have to learn.
Pen-first drawing
Pressure-sensitive freehand brushes built for pen displays and drawing tablets, with full mouse support, a precise eraser and undo.
Fog of war with line of sight
Cover the map, paint and reveal by hand, or give friendly tokens a vision range. Walls and closed doors block their sight; open a door and the view opens with it.
Path measuring
The Measure tool finds the shortest route around walls and occupied tokens, counting 5 ft per square or hex with 5e-style diagonals. Toggle Avoid Opportunity Attacks to route outside enemies' reach.
Initiative tracker
Compact combatant cards for name, color, enemy status, vision and initiative. Rolling fills only empty scores, and Target centers the view on any token.
Multi-floor buildings
Numbered, renameable floors that each keep their own drawing, fog, walls, doors and tokens. Link them with stairs, ladders or elevators and move tokens between floors.
Square & hex grids
Square or hexagonal overlays at 5 ft per cell. Size the map tile by tile, up to 150 × 150, and resize later without losing your layout.
Terrain textures
Named terrain colors and procedural grass, stone, sand, water and grain textures. Flood-fill a walled room or paint the whole map in one click.
Ambience lighting
Campfire, moonlit, dungeon and forest ambiences add tint, vignette and drifting sparks or fireflies on the player screen. Slide from daylight to night, or pick a mood like Underdark.
Token library
Save reusable tokens with name, image, speed, size, HP, AC and allegiance. Group them into parties and drop them onto any map.
PNG & JPG export
Export the map at full resolution, with or without the grid. Hidden layers stay out of the picture, so you can share a clean handout.
Included maps
Open the app and start playing tonight
Four ready-to-play maps ship with Dungeon Mirror. They are real maps, not pictures: walls, doors, roofs and stairs all work with fog, vision and measuring. Save a copy and make them your own.
The Gilded Flagon2 floorsTwo-storey roadside inn: bar, hearth, kitchen and five guest rooms, under a thatched roof that lifts when heroes walk in.The Sunken CryptDungeonPillared nave, flooded ossuary and a sealed tomb. The pillars block line of sight, so fog reveals the hall piece by piece.Moonwell GladeWildernessOld forest with a stream, a footbridge, a ruined watchpost and a ring of standing stones around a glowing well.Crossroads CampWildernessA merchant caravan camped where two roads meet: tents around the fire, wagons, a market stall and a fenced corral.
Pricing
Pay once. Your whole table plays.
Dungeon Mirror
[YOUR PRICE]one-time
For the DM. No subscription.
The full DM dashboard and every tool above
Display 2 player window for Discord screen-sharing
Four ready-to-play maps, plus unlimited maps of your own
They join your voice channel and watch Display 2. Nothing to buy, install or sign up for.
Planned A free player app, so players can connect directly while the DM still pays once to host.
FAQ
Questions at the table
Do my players need to buy or install anything?
No. Only the DM buys and installs Dungeon Mirror. Players see the map through your Discord screen share, the same way they'd watch any stream.
What exactly do players see?
Only the Display 2 window: the active floor and the map layers you've left visible. Your tool rail, settings and initiative tracker stay on your own screen.
Do I need two monitors?
It works best with two: your dashboard on one, Display 2 full-screen on the other. In the app's display setup you choose which monitor Display 2 opens on.
Is it a subscription?
No. Dungeon Mirror is a one-time purchase of [YOUR PRICE] for the DM.
Which rules does it support?
The grid and tokens work for any tabletop game with a square or hex map. Distance measuring uses 5 ft cells with 5e-style diagonals, and opportunity-attack avoidance uses a 5 ft reach.
Do I need a drawing tablet?
No. Dungeon Mirror is pen-first, so pressure-sensitive pens feel at home, but every tool works with a mouse too.
Does it work on Mac or Linux?
Not yet. Dungeon Mirror ships as a 64-bit Windows installer for Windows 10 and 11.
Where are my maps stored?
On your own PC. Save maps to My maps inside the app, export save files you can back up and reopen, or export a finished map as PNG or JPG.
Is a player app coming?
It's planned: a free player app so players can connect directly, with the DM still paying once to host. Join the mailing list to hear when it's ready.
Be there on launch day
Get an email when Dungeon Mirror is ready to buy, plus the occasional development update. No spam; unsubscribe anytime.