“As a designer, you want to use your theme and title to set expectations, and then ensure that the rest of your game meets those expectations.”
How to make a great video pitch of your game:
http://www.leagueofgamemakers.com/pitching-your-game-by-video-bostonfig/
The challenges of producing a game with custom components: dice, boards, boxes, inserts, meeples, sleeves and more (audio):
http://www.boardgamedesignlab.com/custom-components-in-your-game-with-edo-baraf/
How to approach publishers with game ideas (audio):
http://www.thecompanybard.com/tgc-express-081-talk-publishers-scott-morris-passport-game-studios/
Advice for designing large-group games (audio):
https://www.buzzsprout.com/48513/487383-episode-29-designing-large-group-games
Two game design podcasts answer listener questions on a variety of topics (audio):
http://ludology.libsyn.com/ludology-episode-147-listen-up
https://www.buzzsprout.com/7928/486680-162-listener-mail-february-2017
Questioning the common wisdom about playtesting:
http://www.bgdf.com/forum/game-creation/playtesting/common-playtesting-myths
What should go on the box? (audio)
http://thegamecrafter.libsyn.com/what-goes-on-the-box-with-the-game-crafter-episode-113
Decision scales: how broadly a player's choices affect the game:
http://www.kindfortress.com/2017/03/07/game-design-glossary-decision-scales/
http://onboardgames.libsyn.com/obg-236-language-lessons (audio)
