Books

Illuminae. It's an epistolary novel, so it's narrated in the standard sense. They are often told via letters from protaganists to another chatlogs, or other documents. From wikipedia about Illuminae:

The story is told through a series of documents; including classified reports, censored emails, camera transcriptions, and interviews

(I did not quote it in full because I'm trying to keep it as spoiler free as possible. I remember having a lot of fun when I read it without knowing anything, I just picked it up from the library and started reading.)

This book definitely wins for uniqueness of form, although I now understand what type of book it is and how to find more like that. But I've only ever read one book like that.

Although House of Leaves also counts a little bit as epistolary fiction but we've all heard of House of Leaves so that one doesn't count.

Though, 17776 - wikipedia, is even more unique and also epistolary speculative fiction, but that's not a book, but is instead online articles (which means it can include videos!).

You can start reading that one, right now, here: https://www.sbnation.com/a/17776-football