I was able to get this to work with an LLM, but had to build some short term memory to keep awareness as you explored. The current site allows you to interact with an Oregon Trail or Zork like world, but you can specify any time in history and then it will create the stories and stay within that world. I also have it generate some images to go along with you for fun. https://grue.is/ (PS, I don't know how to code, so this is also proof that you can use an LLM to write all the software, here is my github if you are interested in learning more about that: https://github.com/lrspeiser/Grue.is)