Don't buy this. Don't read this.
Not something you usually say atop a four star review but it's the truth. It's for your health. What we have here is a novella set between two video games and if you do read it you might get a case of what literature doctors call Acute Blue Ball-itis. It's a technical term.
Until Brandon Sanderson decides he's going to write a full novel on how the story ends, don't read it. This is the single reason I've marked it as four stars and not five stars. Other than that...it's great. I read up on the video game and all I can think is: how do you turn such a simple video game into such a deep well-developed fantasy world?
Brandon--Aww Shucks--Sanderson, that's how.
Four stars...cuz of the technical term...