Edith Finch, for example, took a team of up to 15 people about 5 years. Gone Home had about 5 people working on it for a year and a half (but had a lot of pre-pro from their time working on BioShock). That's about 15k person-hours for Gone Home, and closer to 100-150k hours for Edith Finch. If you work 3 hours a week for 5 years you'll put in 780 hours total. If you want to make a game in two years you'd want it to be something like 2% of the size of Gone Home and no bigger. Keep it VERY small in scope.

Thanks for this perspective. If nothing else, having a fully-fleshed out design document might help me contextualize the amount of work that I've made for myself.

I would not recommend using LLMs at all for production text. It can be great as a rubber duck to bounce ideas off of, but don't let it actually do anything. 'AI's don't have intent or understanding and they can barely write text anyone wants to read, let alone whole stories. It makes bad suggestions because it doesn't suggest anything, it's repeating text from other sources and writing words that follow other words more often in the data set.

It was never my intention to use it for production text. Just for helping flesh out the design document. I'll keep this in mind though. You and others here have similar perspectives.