Is there an AI for being my dungeon master?

Running an AI DnD campaign: what holds up and what slips

An AI DnD campaign holds up inside a session and slips over months. At the table, the tools above run combat, play every NPC and improvise when you wander off, and the 5e platform draws battlemaps. The long game is harder, because a model only reads a limited window of text, so these tools squeeze the story into summaries: one writes a memory every six actions and keeps 25 on its free tier, 100 on its first paid plan. What never made a summary is gone.

Keep your own notes on the villain's motive, debts and promises, and pin them where the tool allows. Ask for real danger too: in a small 2024 Utrecht University master's thesis (seven players with an AI dungeon master, three with a human), the AI scored higher for immersion and the human for competence and flow, and some players said the AI railroaded them and served too few threats.

Solo DnD with an AI dungeon master, or the old way

Solo DnD gets easier with an AI dungeon master, because it fixes the oldest problem of playing alone: you cannot surprise yourself. The old way still works. Solo adventure books and oracle tables let you ask the world a yes-or-no question, roll for the answer and interpret it yourself. An AI does the interpreting and plays every NPC in full sentences.

One pick above is built for one player: campaigns on your phone or in a browser, a dice screen and classic classes, rated 13+ on the App Store. The 5e platform at the top works solo too, with friends optional. The price of playing alone is that nobody checks the rulings but you, so write down the rules you care about, such as death saves and rests, and tell the AI to enforce them.

AI RPG and text adventure games: story first, rules optional

An AI RPG comes in two kinds. AI dungeon masters keep the D&D skeleton: character sheets, hit points, a roll against a difficulty. AI text adventures drop the rules: you type what you do, in any genre, and the story bends around it. That is freer, and much easier to break, since no rule says your character cannot simply win.

Open-ended story apps also allow content a table of friends might not, so check the age gates. The 5e platform above is for adults only in its terms, which warn its AI can produce adult-oriented output. The text adventure admits players from 13; its Safe setting blocks sexual, hateful, violent or triggering content, and its Mature setting makes you confirm you are 18 or older. For a story with your kid, the bedtime story tools are the better fit.

A free AI DM for DnD, and where the free tiers stop

A free AI DM for DnD exists, but every free tier is a sample. The 5e platform above gives you 25 game master turns a day, counted only when the GM replies, for a party of up to three; unlimited standard turns start at $19.95 a month. The text adventure is free with a 4,000-token story window and 25 saved memories, against 8,000 and 100 on its $14.99 plan. The phone app is free to start, with plans from $5.99 a month, and the TV game is a 7-day trial, then $12.99 a month.

The general chatbot at the end of the list will run a whole campaign in text on its free tier, as long as you roll the dice, keep the character sheets and paste a recap at the start of each session.

Play DnD with AI and friends: party size and who pays

To play DnD with AI and friends, usually only one person pays. On the 5e platform above, the host's plan sets the party size, from three players on the free tier to six on the $39.95 plan, and friends join free. The text adventure sets no limit on players, and everyone plays on the host's AI model and safety settings, so the host's membership covers the table.

The TV game puts the whole group on one couch: no character sheets, everyone speaks their moves out loud and the narration plays on the screen. Its maker warns that overlapping voices lead to surprising interpretations, so take turns talking. If you build games rather than play them, AI that runs talking NPCs is a different job.

being my dungeon master: quick answers

What is the best AI dungeon master?

The one that matches how you play. For 5e rules, battlemaps and a party of friends, the first pick above. For solo sessions on a phone, the second. For any genre with no rules to learn, the text adventure. For a group on a couch with nobody typing, the TV game. For free, a general chatbot and your own dice. Play the same opening scene in two of them before you pay for either.

Can an AI DnD character generator build my character?

Yes. The AI dungeon masters above build your character inside the game, the 5e platform also ships character generators in its world-building tools, and the TV game turns a spoken introduction into plot hooks without any sheet. A general chatbot will roll up stats and write a backstory on request. Check the numbers against the rules before the first session, because nothing forces it to apply them.

Can a general chatbot be your dungeon master?

Yes, for a one-shot or a short campaign. Tell it the system and edition, how deadly and how serious you want the game, and that it must ask you to roll instead of rolling for you; then roll real dice. It forgets as the chat grows, so end each session by asking for a recap and paste it in next time. The dedicated tools above do that bookkeeping for you, which is most of what they charge for.

Does Wizards of the Coast allow AI in D&D?

Not in its own books. In December 2023 Wizards of the Coast said artists, writers and creatives contributing to D&D must not use generative AI tools to create final D&D products, after AI-assisted art turned up in a giants sourcebook that August. The policy covers what Wizards publishes, not how you run your own game. None of the picks above is official; the 5e platform builds on the SRD 5.1 rules, which Wizards released under a Creative Commons license.