Dungeoncraft*: A Handbook for Designing and Surviving Deadly Dungeons is one of the d20 system sourcebooks in the Legends & Lairs line. The first two chapters are primarily player-oriented, with new prestige classes (cave ranger, deep druid, earth dragon savant, gloom dirger, hunter in the deep, light bearer), feats, equipment, dungeoneering advice, and new spells and magical items. The last three are more oriented toward the GM, and cover dungeon hazards, random encounters, new monsters (cave moth, darkness demon, fire slime, necromantic slime, larval spined worm, adult spined worm, swarmling, tentacled horror), systems for monster morale and social relationships, a system to create dungeons, advice on how to run them, dungeon templates, and a full chapter of sample encounter areas.

* The title, as it appears on the front cover, appears to be "Dungeon Craft" with both words capitalized and on separate lines. However, the title page and interior uses "Dungeoncraft" and this is the way it appears in Fantasy Flight Games' publications.