Books told in unique formats - Any Genre or Age

[Lobstergirl, au gratin]

Interior Chinatown is a novel told in the form of a teleplay.

[Lobstergirl, au gratin]

The Unfortunates is sometimes sold bound, but sometimes as a "book in a box" where the chapters are loose and can be read in any order.

[Lobstergirl, au gratin]

Multiple Choice is fiction written in the form of a multiple choice standardized test.

[Shawna]

Maybe try some books written in verse:
Call Me Athena: Girl from Detroit
The Black Flamingo
Me

[John]

253by Geoff Ryman

[Rainbowheart]

Seventeen Ways to Eat a Mango

[Lobstergirl, au gratin]

Grown Ups is told in emails, texts, and other social media.

[Lobstergirl, au gratin]

Lincoln in the Bardo

[Pamela]

The Employees by Olga Ravn The Employees

[AriadneQuestion]

This is How You Lose the Time War It's so good!

[MJ]

The whole Katherine Kerr Deverry series is time shifts and reincarnation.

https://www.goodreads.com/book/show/4...

[MJ]

The 7 1/2 Deaths of Evelyn Hardcastle is a ground hog day of who done it.

https://www.goodreads.com/book/show/3...

[Lobstergirl, au gratin]

Life After Life

[Darcey]

Best. Night. Ever.: A Story Told from Seven Points of View
It's Not Me, It's You
The Date to Save
That's Not What I Heard
Better Off Friends
The Mother-Daughter Book Club (series)

[Donna]

Dracula by Bram Stoker is an epistolary novel told by letters, diary entries, and newspaper clippings.

Malice by Chris Wooding and How to Disappear Completely and Never Be Found by Sara Nickerson are both middle grade novels that go back and forth between prose and graphic novels. The latter is also dual POV, with occasional but-ins from a 3rd character.

The Thrilling Adventures of Lovelace and Babbage is a comic book with tons of footnotes.

You'd probably also enjoy xenofiction (books told from an animal or alien's perspective. Think Warriors.

[Gabi]

Nevernight by Jay Kristoff is an adult fantasy novel about Mia who joins a cult of assassins to get back at those who killed her father. The way it's narrated is very reminiscent of someone from the realm they're in talking to you; it takes lots of getting used to but once you get a hang of it it's a fun read. If you're not a big fan of footnotes I wouldn't really recommend but if it's something you don't mind its a good book.

[Helena]

Like Water for Chocolate is a novel in the form of a cookbook

[Florence]

The stories grandma forgot (and how I found them), and the hidden story of estie noor, both by Nadine Aisha jassat are both fantastic novels told in verse

[Astra]

Roxy by Neal and Jarrod Shusterman.
Perspectives are from both the main characters, and from the POV of the drugs, who in the story are personified as people. There's also interludes from other drugs, and in those you have to read both the whole words and only read the bold letters to get both messages.

[Magic]

I know this is super late, but I would recommend Genuine Fraud. It’s not my favorite when it comes to the plot and stuff, but it is written backwards (the first chapter is the end of the story and it goes backwards until the last chapter which is actually the beginning of the story) and I found it super interesting.

[Astra]

https://www.goodreads.com/list/show/3...
Here's a list of books that are epistolaries

[Pamela]

Breakout