Pursuing elegance
GDC2011 - Motivating Players in Open Worlds
Motivating Player in Open Worlds
Level Design Workshop - GDC China 2012
How Modding Made Bethesda Better: GDC 2015 Level Design in a Day
GDC 2016: Modular Level Design of Fallout 4
Bethesda's Iterative Level Design Process for Skyrim and Fallout 3