Save the Cat is one of those screenwriting books, like Robert McKee’s Story, that you can’t help running into if you’re looking at writing advice at all. The title refers to the idea that you must establish your protagonist in a movie with some sympathetic action. There are a lot of musts in this book. Snyder is telling you specifically how to write a three-act, 110-page movie script that fits a Hollywood formula of a few years back — down to which pages of the script should feature major events and reversals; how many beats should appear within each act; and how the hero should be feeling at the midpoint of the movie.
He explains that the heroes ought to be in their 20s at the latest because Men Under 25 are the most coveted viewing demographic. He does not overtly say they should be white, but that assumption is I think implicit. The book is a few years old; after Black Panther and Get Out and Crazy Rich Asians and so on, perhaps Snyder would now have something different to say about representation.
In any case, the book is largely about formula — and a formula much more genre-bound than my nemesis The Hero’s Journey. Snyder has very little to say about theme, other than to acknowledge that you probably should have one and mention it early in your screenplay. He has not much to say, either, about developing characters or about representing personal truths. He doesn’t very much care what the substance of your work might be. This book is about how to package it, how to make it accessible to audiences in a format that is familiar to them and that will help them quickly understand the emotional landscape.
So if this is mainly formula for a different medium and different market from games, does it have anything to offer?