There’s a survival game called Grounded that’s basically this but even smaller. And a coop story action/adventure called It Takes Two that does the same.

I’d look at karlicoss’s personal data infrastructure for inspiration (or perhaps deterrent).

Obsidian is a fantastic note taking app that focuses on cross-linked notes, so is effectively a personal wiki.

It has a paid add on that lets you publish it to a website, or you can just do it yourself since the files are all Markdown.