Lovely! Best friend Richard Pullman talks game design with Oswald and they get neck deep into the psychology of play, and the  challenges of creating an awesome RPG campaign. Turns out it's pretty  sophisticated stuff!
After this conversation, Oswald definitely got on the list of designers I like to listen to for problem solving. He may be an oldschool D&D Dungeon Master, but his approach to design feels invigorating.
Mines, Claws & Princesses can be obtained here: https://www.drivethrurpg.com/product/240094/Mines-Claws--Princesses