Long ago, in a time when the worlds of men were ruled by Wizards, the greatest of all Magi, Zagyg, built a mighty fortress.  Overlooking the small town of Yggsburgh, on the heights of the Four Tors, Castle Zagyg became a place of power where the Mage worked his arcane sorceries.  He wove spells of great wonder and explored the ethereal dimensions where even gods and men fear to tread.  His power knew no match in those days of wonder.  But, as all things end, so did the reign of Zagyg.  Where he went, whether slain or lost, none could say.  The good folk of Yggsburgh could only say that no power reigned in Zagyg.  In time, the fortress and its dungeons became a haunted place of nightmare and terror.  Strange lights beckoned from her high towers and the howls of cursed creatures could be heard on the windswept slopes of the Four Tors.  Ever did men look upon that place with horror and dread.

But always are there those who are brave and strong, who possess powers arcane and who long for more.  Those adventures, those Seekers, strive always to plunder the depths of the world.  So it was with Zagyg.  In time, rumor of the castle’s abandonment spread far and wide and men and women came to see it for themselves.  Individually, or in groups, they scaled the rocky bluffs and entered those dread halls.  To what end . . . .

Countless have tried.  Countless have died.  Only a few have survived the horror that is and always will be Castle Zagyg.

For over three decades Gary Gygax has run hordes of adventuring parties through his own Castle domains.  Whether on his porch at Lake Geneva, at Gencon in Milwaukee, or any number of countless smaller conventions, Gary has invited players to pit their bravest and wisest against his dungeon deeps and castle ruins. Whether they knew it or not, these adventurers have entered a realm of legend and many a brave soul can look back with pride or shame, at the tumultuous moments of grim tunnel fighting that was and is Castle Zagyg.

Never before told, these adventures are Gary Gyagx’s personal creations, comprising adventures in the almost limitless deeps of the dungeons of the legendary Castle Zagyg. For 30 years, whether at Gary's table or on the convention floor, players have dashed themselves against the shoals of Castle Zagyg. So many have tried plundering these deeps of Gary's favorite wizard that the dungeons have become legends throughout the gaming world.