Talk from game designer Jonathan Blow of Braid (2008) and The Witness (2016). In this talk, Blow shows some of his favorite game design from 1001 Spikes, Miegakure, Starseed Pilgrim, and Stephen's Sausage Roll.
This video was stitched together from a VOD at https://www.twitch.tv/pax/. I'm sorry that there are a few jumps in the talk — they were caused by PAX/Twitch streaming issues. Maybe someday PAX will release the uninterrupted video.