Closed alpha Solo D&D 5e, run by the AI you bring

Your AI tells the story. Wistmere keeps the record.

Play a long campaign in your browser. The engine rolls the dice and keeps the character sheet. It also hands your GM its notes on every person, place and thing that comes back into the story.

Join the waitlist See what works today
  • D&D 5e, SRD 5.2.1
  • Pathfinder 2e (alpha)
  • Claude, ChatGPT or Gemini on your own API key
The Wistmere table during a turn. On the left is the story. The player casts Magic Missile, and the log records the spell and 6 damage to Pell the goblin. The engine rolls Ilse Varrow's Dexterity save, 9 plus 2 is 11 against DC 13, a failure signed by random.org. The GM then narrates the goblin's net and poisoned blade. On the right is the character panel: Ilse Varrow, elf wizard level 3, at 13 of 20 hit points. It shows her spell slots, her concentration on Detect Magic, and the Poisoned condition with 9 minutes left.
The live table in a demo campaign. The names are made up; the rolls, hit points and log are the real engine's.

One turn, start to finish

Each step below is cropped from the turn in the picture above.

  1. You act

    Write what your character does, in your own words.

    The player's message: Before he can draw, I loose Magic Missile at him, upcast to second level.

  2. The engine rolls

    The GM calls for the roll and the engine makes it, with the character's real modifiers. The roll is tied to the action it answers, and its card shows where the randomness came from.

    A roll card: Ilse Varrow, Dexterity save against DC 13. She rolls 9, plus 2, for 11: a failure. The card is marked Signed by random.org and has a link to verify the roll.

  3. The sheet changes

    Damage, spent slots and conditions are recorded as events. Hit points are worked out from those events; the AI never types a number in.

    Ilse Varrow's character card after the turn: 13 of 20 hit points, her ability scores, and a Resources card. It shows day 1 at 00:01, level 1 and level 2 spell slots with some spent, concentration on Detect Magic with 9 minutes left, and the Poisoned condition for 9 minutes.

  4. The GM remembers

    The GM pins what matters to the person, place or thing it concerns. Those notes come back whenever that entity returns to the scene.

    A Remembered card for Pell the goblin, in the scene. Appearance: wears a copper bell on a cord; it never rings. Disposition: frightened of magic; flinches at every spark. Both notes are from session 0.

The AI narrates. The engine keeps the books.

Your GM proposes what happens. Wistmere checks what it models (the dice, hit points, spell slots, each step of character creation), applies it and writes it into the campaign’s log. What it does not model, your GM adjudicates, as a human GM would. Each item carries the same labels as the live list of what works.

Guided character creation
Ability scores by standard array, point buy or engine rolls. Then species, class, background, spells and starting gear, each step checked before you move on.
AvailableEnforced
Engine dice
Every roll is made by the engine, tied to the action it answers, and kept in the log. A reroll is recorded with its justification, and the first roll stays visible. With random.org the entropy is signed, so you can check it, and the roll bias page charts every die.
AlphaEnforced
Hit points
Damage and healing are events. Current hit points are derived from them and never set by the AI.
AvailableEnforced
Spells, conditions and rests
Prepared spells, slots spent on casting, and concentration. Conditions expire on the game clock, and rests restore what the rules say. A spell’s effects are the GM’s to apply.
AlphaTracked
Narrative memory
Notes are attached to people, places and things. The GM can correct or retract them, and they come back whenever that entity does.
AlphaTracked
Sessions and level‑up
Each sitting is opened and closed, and its recap grounds the next one. Experience and a guided level-up cover hit dice, features, subclasses, feats and new spells; using class features in play is the GM’s call.
SessionsLevel-up alphaEnforced

Your rules, your AI

Rules systems

  • D&D 5e Available

    The System Reference Document 5.2.1 (CC-BY-4.0): 339 spells, 12 classes and their subclasses, 9 species, 4 backgrounds, magic items and gear, and a 330-creature bestiary.

  • Pathfinder 2e Alpha

    Remaster rules from Player Core (ORC): checks with degrees of success, the three-action economy and valued conditions. For now: 1st level, Fighter and Rogue only, characters made through the API, and no level-up, equipment or bestiary yet.

Bring your own API key

Connect a Claude, ChatGPT or Gemini API key and it becomes your Game Master. Your provider bills that key's usage to your API account. A chat subscription such as Claude Pro or ChatGPT Plus is a separate product and doesn't include API access.

  • Claude Anthropic API key
  • ChatGPT OpenAI API key
  • Gemini Google AI API key

All three are alpha: built and contract-tested, with live smoke tests per provider still to come.

No key? We can give your table a monthly allowance of managed turns that we pay for, and the table shows what's left of it. During the alpha we grant allowances by hand.

Coming

  • Buying managed credits in the app.
  • Scene art for key moments and characters.

Good to know

What does it cost?
Wistmere is free during the alpha. The AI runs on your own API key, and your provider bills that usage to your API account. A chat subscription such as Claude Pro or ChatGPT Plus doesn't include API access. Without a key, we can grant your table a monthly allowance of managed turns that we pay for.

How do I get in?
Wistmere is in a closed alpha. Join the waitlist below and we'll email you when a place opens; we invite testers in small waves. Invited testers get an account from us and sign in here.

What if the GM gets a fact wrong?
The GM can correct or retract a note, and the correction goes into the log too. Hit points, slots and conditions change only through the engine's rule checks, so a line of narration can't change your sheet by itself.

Can I play with friends?
The alpha is built for solo play. Shared tables are in testing and aren't the focus yet.

Is my data mine?
Yes. Your campaigns are private, and any content you import stays in your own space. When you play, your campaign's context is sent to the AI provider you use to run the turn. See our privacy notice.

Claim your place at the table

Wistmere is in a closed alpha and free while it lasts. Join the waitlist and we'll email you an invitation as places open. Early testers get a hand in shaping what comes next.