20 Nov 2014 Author David Lightbown’s talk at GDC 2015 posted by @gamasutra ! http://t.co/AYtwx6QUOz http://t.co/LkAwhdHwly by ikaris | posted in: Uncategorized | 0 Author David Lightbown’s talk at GDC 2015 posted by @gamasutra ! http://t.co/AYtwx6QUOz http://t.co/LkAwhdHwly