Deep beneath the keep of Castle Greyhawk, a really nasty device is creating mutated, unpleasant monsters that are running wild throughout the castle and the twelve-level dungeon beneath. The call has gone out for heroic, fearless, and perhaps foolish adventures to out-hack, out-slash, and sometimes even out-think hordes of doughmen, headless mice, manic bee queens, really bad dead things, burgermen, crazed chefs, and movie moguls. If they survive these and much odder obstacles, the characters still have to find the nasty monster creator and put it out of business. Castle Greyhawkcontains 13 detailed levels for adventuring and exploration. Each is a separate adventure written by different author and each has its own unique brand of baffling weirdness. Some levels involve solving puzzles and some require good old hacking and slashing. The adventure can be played separately or all together as a grand quest to free Castle Greyhawk from the evil, rotten hordes that are plaguing it. The common theme of this dungeon is that no joke is so old, no pun so bad, and no schtick so obvious that it can't be used to confuse and trip up PCs! 13 Adventures for Character Levels 0 to 25. TSR 9222

Isle of the Ape is an adventure module for the Dungeons & Dragons role-playing game World of Greyhawk campaign setting, in which the events occur in a magical demiplane of the same name created by the mad archmage Zagyg Yragerne TSR 9153

Four great and powerful heroes travel in search of adventure. Led by Mordenkainen, wizard without peer, they have come to mysterious Maure Castle, a forlorn and foreboding place, source of wonderment and awesome adventure, following a strange and terrible story. For, somewhere deep beneath Maure Castle, from whence no person has returned alive, there stands two massive iron doors - doors without latch, lock, or handle - the Unopenable Doors. And if the doors are opened, what then? Such potent evil, such terror lies beyond, that even the bravest adventurers may quail before the ultimate test! Mordenkainen's Fantastic Adventure is a challenging adventure for high-level play. Four original characters from Gary Gygax' famous Greyhawk campaign are included for your use. Can you meet the challenge? Can you survive what lies beyond... the Unopenable Doors? TSR 9112

A combination wilderness/dungeon module, first searching for then exploring the temple of Tharizdun. Tharizdun is long gone from the place, so there's no epic final fight. Rather, a mysterious Black Cyst waits at the bottom of the dungeon. The encounter with it is almost scripted, having no hazard except for careless/foolish players. Contains several monsters from the Fiend Folio. Loosely follows Lost Caverns of Tsojcanth. TSR 9065