Yes I am so glad someone has brought this up. I find ITCH.IO to be a fun place to post and search for other pieces of writing. In fact my favorite short story author happens to be on Itchio so that tells you something.
Originally yeah I never would have considered using Itchio to search for visual novels, interactive fiction, or even straight-up books as in fully text (which have been uploaded to the site, a fact I was not aware of until some time ago). Over time I have come to refer to Itchio as a place for sharing creative works just as much as games and I know other people might not agree with me but I love seeing more books and heavy-story based projects appear on this site.
It can be hard to find good visual novels for example (because the genre is so polluted with generative slop these days) but I try to search under my favorite tags, and see if I can find anything interesting. Key word is interest. I do not have the time to read everything I find. I look for intriguing thumbnails, short titles, and a direct description. I think a game being for free, especially available in browser, allows for easy reading to see if the premise hooks me or not. It usually takes a bit before I find something I like, and you're not going to find anything you will 100% like, but I think every now and then you will read something that makes your day better, or gives you a fun idea to think about when you get done reading. That's what I like to look for at least.