"Extra credits" have made a video on Narrative Mechanics - it is also an example of procedural rhetoric:

Narrative Mechanics - How Missile Command Tells a Story - Extra Credits (YouTube)

Game designer Brenda Romero has made a series of analogue games called “The Mechanic is the Message”. In this series she tries to represent and model complex historical, cultural and social topics through a few core game mechanics. You can listen to her talk about designing one of these games within these series called “The New World”:

Brenda Romero: Gaming for understanding (YouTube)

Game Matters has made a 15 minutes video on “The (procedural) rhetoric of games”

The (procedural) rhetoric of games (YouTube)