This document summarizes Ian Bogost's book "Persuasive Games" which argues that video games can be considered an expressive artistic medium. It defines the concept of "procedural rhetoric" - the idea that video games can persuade the player through their interactive rules and systems, rather than verbal or visual arguments. The document explains key terms like rhetoric, visual rhetoric, digital rhetoric and procedurality to define procedural rhetoric as the persuasive practice of authoring rule-based representations of systems. It notes Bogost uses examples from politics, advertising and education to illustrate how video games can effectively express arguments through their interactive processes.