This is a very good book about relationships of all kinds - familial, romantic, friendly - and the relationships that are harder to define in a single word. Sure, it's also about video game design, narrative structure, being empathetic and kind, and a little love letter to Southern California. It feels like the 1990s, and also timeless. Zevin writes wonderfully about gender, race, age, and all the ups and downs of those definitions across generations.
Very highly recommended, for people who like people.