Here's the original session description: "Former Game Developer magazine code columnist and 2006 IGF Design Innovation winner Jonathan Blow, the creator of innovative time-manipulating platform title Braid, discusses the deliberate methodology behind his indie game prototyping. He shows how he conceives, develops, and tests out indie concepts in playable form, and discusses how you know when a prototype is working, and where to take it from there, demonstrating multiple in-development prototypes (including Braid) along the way." (Other IGS 2007 videos posted so far are Matt Wegner on physics, alongside the Gastronaut founders on 'Small Arms' for XBLA, the Telltale folks on Sam & Max/episodic gaming, and Gamelab's Eric Zimmerman on 'The Casual Cash Cow'.)
IGS Video: Jon Blow On Indie Prototyping, Braid
Organizers are continuing to put key video lectures from the 2007 Independent Games Summit online, and Gamasutra has now posted the fifth lecture, with Jon Blow discussing indie prototyping and showing his IGF