Welcome to the final & rare adventure by Gary Gygax. Published in late 2007, Castle Zagyg: Upper Works is a massive work covering not only the famous Castle Greyhawk, all its towers, the central fortress, & the first gygaxian dungeon level below; but also myriad locations in the wilderness surrounding & the honeycomb of caves infesting the rocky bluff upon which the castle stands. Traditional entry is either along the haunted Old Castle Track or by Rhennee riverboat up the False Urt River, however nothing is stopping parties from trailblazing overland into The Little Hillwood. Players have the option of beginning the game in any of the six regions of the castle & may wander anywhere within: 1. The one-time castle acreage; 2. The “Mouths of Madness” caves; 3. The vast castle precincts; 4. Both intimidating East Towers; 5. The ebon edifice of the Fortress; or 6. “The Storerooms” dungeon 1.