AI Dungeon Master Apps Compared (2026): AI Dungeon, Friends & Fables, Hidden Door, VoxDungeon

Search for "AI dungeon master app" and you get a mix of things that aren't comparable: text-story generators, Discord bots, virtual tabletops with a chatbot bolted on, and a few tools that actually try to run a game. This guide sorts them out. It covers what an AI Game Master really has to do, compares the main options honestly on price and format, and is clear about what our own tool, VoxDungeon, does and doesn't do.

First, what is an AI Dungeon Master?

A human DM does four jobs at once: narrates the world, plays every non-player character, referees the rules and dice, and keeps secrets so the story has surprises. An AI Dungeon Master is software that takes over those jobs so you can play without a group or without anyone having to prep. The useful test is simple. Describe an action in plain words, like "I kick the door open and shout a warning," and see whether the tool resolves it (a roll, a consequence, an NPC reaction) or just writes a paragraph that drifts wherever you steer it. The first is a game master. The second is a story generator. Both are fun, but they are different products.

Two things that are not AI DMs

Older versions of this article, and a lot of pages still ranking for this search, name D&D Beyond and Roll20 as AI Dungeon Master apps. They aren't. D&D Beyond is a digital toolset and character builder, and its published 2026 roadmap is about rebuilding its game platform and the Maps virtual tabletop, not an AI referee. Roll20 is a virtual tabletop: a shared map, dice and sheets for a group that already has a human DM. The same goes for Mythic Table and other VTTs. They are excellent at what they do, but if nobody in your group wants to run the game, they don't solve that problem.

The real options, compared

AI Dungeon (Latitude)

The oldest and best-known name. It is a text adventure engine: you type, it continues the story. It is not built around a rules system, there are no character sheets or hit points unless you track them yourself, and it won't stop you from declaring that you win. What it offers is enormous freedom and a huge library of community scenarios. There is a free tier with unlimited play on smaller models and a short memory window, and paid tiers that climb from roughly fifteen dollars a month into the tens of dollars for bigger models and longer memory. Latitude changes its plans often, so check the membership page before you commit. Also worth knowing: newer accounts share story text for model training by default, and you have to switch that off in the privacy settings.

Best for: freeform collaborative fiction with no rules in the way.

Friends & Fables

A text RPG platform with a named AI Game Master, Franz, that tracks inventory, applies rules and reacts to your choices. It leans on a D&D-style ruleset and supports small groups playing together, with world-building tools for people who like to design their own settings. The free tier is capped at a handful of AI turns a day, which is fine for trying it but not for a long session. Unlimited turns and text-to-speech narration start at around twenty dollars a month, with higher tiers for bigger parties.

Best for: text-first groups who want real rules enforcement and don't mind the price.

Hidden Door

A different idea. Hidden Door is a narrative role-playing platform built around licensed fictional worlds, so you play inside settings like Pride and Prejudice or The Call of Cthulhu with an AI narrator and friends. It is closer to interactive fan fiction than to a dungeon crawl, and the appeal is the world you get to step into rather than the dice.

Best for: fans of a specific book or setting who want to play in it, not rules-heavy fantasy.

VoxDungeon

Our tool, so here is a plain description rather than a sales pitch. VoxDungeon is a voice-driven AI Dungeon Master that runs in your browser with nothing to install. You press the mic, say what your character does, and the AI narrates the result out loud. You can type instead if you prefer. Dice are rolled on the server, so the AI can't fudge them and neither can you, and the rules are built on the 5th Edition System Reference Document. You pick one of nine races and twelve classes, roll stats, and play.

Honest limits: voice input uses the browser's built-in speech recognition, which means it is English only and doesn't work in Firefox (you can still type there). You can play as a guest without an account. A free account adds a saved character with an AI portrait. The free tier currently allows five games a day at fifty turns each, with a daily cap on spoken narration, and the game auto-saves every five turns.

Premium is $4.99 a month and removes the turn and narration caps, lets you choose which of the seven narrator voices reads your game (previews are free for everyone), unlocks Quest Mode, and lets you host a private room for up to four players by sharing a six-character code. Hosts get a few guest passes a month so friends on free accounts can join.

Best for: solo play by voice, and the cheapest route to an AI DM that actually referees.

Quick comparison

• Cheapest to start: all four have a free tier. AI Dungeon's is unlimited on small models. VoxDungeon's allows several full games a day. Friends & Fables' is a few turns a day.
• Cheapest unlimited: VoxDungeon at $4.99 a month, then AI Dungeon from about $15, then Friends & Fables from about $20.
• Real rules and dice: Friends & Fables and VoxDungeon. AI Dungeon and Hidden Door are narrative-first.
• Voice: VoxDungeon is voice-in and voice-out. Friends & Fables narrates aloud on paid plans. The others are text.
• Playing with friends: Friends & Fables, Hidden Door and VoxDungeon all support small groups. AI Dungeon is single-player with shared stories.

How to choose in two minutes

1. If you want to write a story with an AI and don't care about rules, start with AI Dungeon's free tier.
2. If you want a referee that tracks hit points, inventory and rolls, pick between Friends & Fables (text, bigger parties, pricier) and VoxDungeon (voice, solo or up to four, cheaper).
3. If you mainly want to play inside a book or film you love, look at Hidden Door.
4. If you already have a human DM and just need a table, you want a VTT like Roll20 or D&D Beyond Maps, not any of the above.

FAQ

Can an AI Dungeon Master run real 5e rules?

Partly. Tools like VoxDungeon and Friends & Fables handle rolls, checks, combat and inventory, built on the free SRD rules. None of them replaces a rulebook for edge cases, and none can run official published adventures, which are not part of the SRD.

Are these safe for kids?

Check each tool's own policy. Story generators with user-made content vary a lot. VoxDungeon applies a server-side content floor to what the AI will narrate, and group play is invite-only with no public lobby.

Do I need a microphone?

Only for VoxDungeon's voice mode, and even there typing works. The other tools are text.

Will the AI remember my campaign?

Every tool has a memory limit. AI Dungeon sells longer memory as its main paid upgrade. VoxDungeon saves your game and character so you can resume, but a very long campaign will still see the AI forget early details.

Try a free adventure with VoxDungeon's AI Dungeon Master, no install and no account needed to start.

Related reading

This is part of our series comparing AI Dungeon Masters — what a general chatbot can and can't do at a D&D table, and how the dedicated tools stack up against each other:

• Picking an AI DM app for solo D&D
• Free AI Dungeon alternatives worth trying
• The best AI RPGs for solo D&D in 2026
• Best AI text adventure games
• AI storytelling games like D&D

Start a free adventure in your browser — speak your actions aloud and the AI narrates what happens next.