I recently learned that FTL (one of my favorite games and overall masterpiece) had an Art Book that was almost lost media for 10 YEARS. I love FTL so much so reading it now is an amazing experience. Steam's Autumn Sale is happening right now so I'd recommend checking it out too. Here's the link to the book:

https://archive.org/details/faster-than-light-artbook/page/n1/mode/2up

And here are some images from it: