DungeonFlux Start a table

DungeonFlux

An AI dungeon master for game night

The adventure plays on your TV. Everyone plays from their own phone. The dungeon master tells the story out loud, and every roll of the dice lands where the whole table can see it.

No accounts, no app to install. It runs on your own computer; the setup guide is on GitHub.

The TV during the opening scene: the party's portraits, the Drowned Lantern tavern, and the scene's goals
Dungeon Master
“Rain drums on the warped roof of the Drowned Lantern. Lanterns sway above the flooded street, and tonight, the lamplighter didn’t come home.”

Act I

One night at the table

What happens on the TV and on your phone, from the first scan to the last cliffhanger.

  1. The TV title screen, showing a join code over a moonlit river town

    Scan in from the couch

    The TV shows a code and the names of everyone who has joined.

    You scan it and you are at the table. No sign-up.

  2. A hero's portrait on the TV beside a phone showing species and class choices

    Make a hero in one tap

    Pick a species and a gender. The engine rolls a legal character.

    Your hero gets a name, a past, and a painted portrait beside the rest of the party.

  3. The opening scene: the party's portraits beside a candlelit tavern as the dungeon master narrates

    The story opens

    The dungeon master sets the scene aloud, with music and rain underneath.

    Your sheet fills in, ready for your first move.

  4. The party at the bar as the barkeep answers, with a persuasion option below

    Talk to anyone

    Tap the microphone and say what your hero says. Your phone offers only the moves that make sense right now.

    The barkeep answers in her own voice, and she keeps her secrets until you earn them.

  5. Heroes fighting a drowned creature on lantern-lit docks

    Fight for the ending

    Tap to attack. You see your odds before you commit.

    The dice roll in full view, your hero strikes on a 3D battlefield, and the night ends on a cliffhanger clip starring your party.

Act II

Your turn. Persuade the barkeep.

This is one beat from the demo. Tap the phone, then watch the TV.

Mother Vell, the older barkeep from the game, leans across the tavern bar
Mother Vell

“Lamplighter? Never heard of him.” She keeps wiping the same spot on the bar.

Lyria Thalen, elf rogue

Persuasion 60% chance

Roll a d20, add 3, and reach 12.

  • Ask about the lamplighter
  • Buy a round
  • Step away from the bar

Act III

The storyteller never touches the dice.

Most AI game masters lose track of the world, let players do anything, and make up numbers. DungeonFlux gives the job to two different minds, so none of that can happen.

The dungeon master

Tells the story

  • Writes the night around the heroes you made
  • Gives every character a voice and a reason
  • Describes what the dice decided, never the other way round
  • Steers the night toward a real ending

The rules engine

Keeps the score

  • Rolls every die, in view of the whole table
  • Tracks health, position and every result
  • Decides which moves are legal on your turn
  • Keeps a record the story cannot rewrite

Secrets stay secret

Each character knows only what they would know. The barkeep cannot let slip where the lamplighter went until someone earns it.

Wander off, and the world notices

Leave the plot behind and someone from your hero’s past may arrive with a letter. The story finds you through the backstory you started with.

No loading screens mid-scene

Art, music and video are prepared before the moment that needs them. If something runs late, the game plays on.

Act IV

Tonight, one tavern. Next, a whole campaign.

DungeonFlux began as a 24-hour build for ShellHacks 2026. Today it runs one complete scene for two players: a smugglers’ tavern, a missing lamplighter, and a fight at the door. Coming next: full campaigns written around your party, full combat with spells and reactions, and memory between sessions, so characters remember what you promised.

Concept art for places the story will go. The game’s screens differ in detail.

Questions

What you need

  • A TV or a monitor for the table
  • A computer to run the game
  • A phone for each player
  • Two players for tonight’s scene
Does anyone need an account or an app?

No. The TV shows a code, and each player opens the game in their phone’s browser by scanning it.

Do we need to know the rules?

No. Your phone shows only the moves you can make at that moment, with the odds for each roll. The game follows fifth-edition fantasy rules from the System Reference Document 5.2.1.

How many people can play?

The current scene is built for two players. Larger parties arrive with full campaigns.

Can we play in Spanish?

Yes. Each player picks English or Spanish when they join, and their phone stays in that language.

What if a roll goes badly?

The story changes course instead of stopping. Fail to persuade the barkeep, and the secret reaches you another way.

Pull up a chair.

Bring a friend, a TV and your phones. The Drowned Lantern is waiting.

Start a table

Runs on your own computer. The setup guide is on GitHub.