This week, we do something a little different: each of the Game Engine hosts challenge the other two to a design challenge. The result: surprisingly deep discussions of 3 very different aspects of game design.

Some references, made without context:

The Wattam trailer from E3

The volunteers dilemma

Our listener question for this weeks topic is also a design challenge: How would you make Portal into a competitive multiplayer game? Send answers and, as always, your feedback, questions or topic ideas, our way via Facebook, Twitter or email. Subscribe on iTunes or via the RSS feed. Thank you to SAE Sydney for the recording space and gear.