This is definitely something very early LLMs could do that has kind of gotten beat out of them. I used to ask ChatGPT to simulate a text adventure game, but now if you try that you always get exactly the same one.

Curious, what kind of prompt gives you the same text adventure game?

Surely it is a question of prompting some context(in UI mode) or with additional kicker of temperature (if using API)?

At the very least some set up prompt such as "Give me 5 scenarios for text adventure game" would break the sameness?

There have always been theories that OpenAI and other LLM providers cache some responses - this could be one hypothesis.