I’ve located a few resources this week that Dungeon Masters may find useful.
Zen and the Art of Dungeon Mastering: At thirty-thousand words this collection of articles is a lengthy but valuable read. It dates back to old AD&D, but the advice contained is just as relevant in any edition.
The puzzle structure of Ocarina of Time: Gareth Rees analyzes a highly successful adventure videogame that holds similarities to Dungeons & Dragons. The Legend of Zelda: Ocarina of Time stars a heroic swordsman who enters dungeons and fights monsters to find loot and magic equipment, so you may be able to apply this to your own dungeoncrafting.
Story structure: it’s not just for movies anymore: Screenwriter Todd Alcott examines videogame Half-Life, a classic first-person shooter famed for introducing story to a genre previously characterized as “a dungeon crawl with guns”.