In the three decades since the birth of fantasy roleplaying, a host of creatures unique to gaming have burst into dungeon corridors and trapped treasure chambers, eager to devour intrepid explorers and adventurers. Dungeon Denizens Revisited presents an in-depth look at ten of these unusual creatures, from the ravenous otyugh to the gargantuan purple worm. Learn the lost secrets of rust monsters, owlbears, and ropers, and delight at new uses for the mysterious mimic or the disgusting gelatinous cube. Each of the book's ten chapters presents a dungeon denizen's history, lore, ecological habits, and schemes, with plenty of advice on how to use the creatures effectively in an RPG campaign -- or how to kill them in their treacherous lairs.