It's still pretty good. TADS is a more modern alternative, and the one I would go with, but basically these haven't been commercially viable products since the 80s so there's not a lot going into it.

Arguably, the right answer now is to document everything that matters to you about the adventure, and tell an LLM to run it.

I wonder if you could make a "choose-your-own-adventure" book uning LLMs.

It would write the book ahead of you, kind of like how railroads could send trains with supplies out to the track as it was built.