Doomworld (and many other forums) regular UnknDoomer recently released an interview with Ken Silverman, the famous creator of Ken's Labyrinth and the Build engine. The interview, done via e-mail, includes 30 questions polled from fans, and covers various topics such as the development of Build and Build 2, the storis behind various Build games up to Ion Fury, the viability of using voxels in games, and a lot of other stuff!
You can read the whole interview over at Doomworld:
https://www.doomworld.com/forum/topic/1 ... -ion-fury/