How granular are the numbers in your game, and how granular do they need to be? A discussion about games’ “fidelity” and ways of cutting down on the math players have to do (video):

https://www.youtube.com/watch?v=ye5xFH6K0vQ

Board game fulfillment: pointers for—and pitfalls of—finding and working with a fulfillment partner to get your game to customers (video):

https://www.youtube.com/watch?v=k5dxPlbJcck

A conversation about ways of approaching mathematical problems in game designs and participating in game design contests (video):

https://www.youtube.com/watch?v=ANVlKDzFQa0

Balance in board games: When is it important, and when is it boring? Can imbalance actually make some games better? (video):

https://www.youtube.com/watch?v=euxdDDTdbeo

Why creating bad games is an important part of becoming a good game designer (video):

https://www.youtube.com/watch?v=nfCMRZYYmZE