Truthfully, I clicked on this one not expecting much, but quickly found myself wanting to learn more. I advise doing what I then did, checking out the full-size preview (7 pages). That was more than enough for me to justify picking it up for $2.99.
I like the writing style, it felt more in tone like a well-composed email (with a little humor) from my GM explaining the new game we'd be playing, as opposed to a dry textbook. There's no artwork other than the cover.
It sits in the sweet spot of my personal Rules-Lite RPGs Goldilocks Zone - not too lite, but just lite enough. There's some meat here on the bones.