Absolutely amazing piece of interactive fiction! The lore and the little mushroom factbook were so fun to read, and it was great getting to match the info there to the mushrooms, too. Especially after eating one early on and panicking over the taste, only to realize, oh, right, that's how it's supposed to be, haha.
I've been looking for something that could scratch that Southern Reach Trilogy/Roadside Picnic itch and I think I've found it. I'll definitely be replaying this and checking out the rest of your works!