A recorded video of Jonathan Blow's lecture given during the Independent Games Summit in March was made available by GameSetWatch for viewing. There's a lengthy gameplay demonstration from Braid which begins around the fifteen minute mark, as Mr. Blow explains about the importance of prototyping. He also manages to slip in a subtle hint about what his next game will be.

- watch it on google video
- download the 170MB .mov file
- read the article
- prototype download page