Gremllm

I was chatting with Simon Willison (who's LLM library I use to power gremllm) on Discord and he suggested D&D use-cases. Kinda works!!!

    >>> from gremllm import Gremllm
    >>> player = Gremllm('dungeon_game_player')
    >>> player.go_into_cave()
    'Player has entered the cave.'
    >>> player.look_around()
    {'location': 'cave', 'entered_cave_at': '2025-07-02T21:59:02.136960'}
    >>> player.pick_up_rock()
    'You picked up a rock.'
    >>> player.inventory()
    ['rock']

(further attempts at this have ... varying results ...)

Just want to say that I'm not an ai guy at all, but this has made me more excited about it than anything in a while. Really cool! Did you also do the one where you put "spells" in your code?

i helped Chris Callison-Burch design a class at upenn, called interactive fiction, which is a similar context to what Simon suggested. the real magic is that it reframes hallucinations as creative story telling. the usecase is SUPER fun if you imagine the LLM as a dungeon master telling a story that gets expanded over time.

the framework he and I built kept track of the game state over time and allowed saving and loading games as json. we could then send the full json to an LLM as part of the prompts to get it to react. the most neat part, imo, was when we realized we could have the LLM generate text for parts of the story, then analyze what it said to detect any items, locations, or characters not jn the game state, and then have it create json representations of the hallucinated objects that could be inserted into the game states. that sealed the deal for using hallucinations as creative story telling inside the context of a game.

i assure you the D&D context is very fun! the class website might give you more ideas too https://interactive-fiction-class.org/

i wasnt officially part of upenn at the time, so my name isnt listed on the site, but we wrote a paper about some of the things we did, such as this one, and you'll see me listed there https://www.cis.upenn.edu/~ccb/publications/dagger.pdf

Sounds similar to AI Dungeon which I believe ran on a fine-tuned version of GPT-2 "all the way" back in 2019. And honestly kind of reminded me of the "Mind Game" in the novel, Ender's Game.

https://en.wikipedia.rg/wiki/AI_Dungeon