In the Yatil Mountains south of Perrenland there is rumored to be a magical hoard of unsurpassed value, a treasure of such fame that scores of adventurers have perished in search of it. Find the perilous Lost Caverns of Tsojanth and you may gain the hidden wealth of the long-dead arch-mage-- if you live. Module S4, this contains a brief wilderness journey to the caverns, but the bulk is underground. The caverns are noted as a previous lair of the Arch-mage Iggwilv- though she is long gone, her Demonomicon remains. This module marks the first appearance of several monsters and items that would later appear in the Monster Manual 2 and Unearthed Arcana. A labyrinth features in the caves. TSR 9061

A traditional "funhouse" dungeon, White Plume Mountain begins with the archmage Keraptis stealing three artifacts and leaving cryptic poems with their former owners. The players are hired to recover the items, and find a bizarre dungeon in the side of the eponymous volcano. TSR 9027

Beware of Baba Yaga and her infamous hut! Baba Yaga is an ancient crone who is said to have power over day and night itself. Many seek her out for her wisdom, which she has gleaned from centuries of travel through numerous worlds. Others, bolder and more foolish, search out the hut to plunder its treasures, which Baba Yaga has gathered from every corner of the multiverse. None, thief or scholar, who enter the Dancing Hut of Baba Yaga leave unscathed. How will you fare now that the great Baba Yaga is in your neighbourhood? TSR 9471

Sinister, twisting images...Horrific nightmares lurking at the corners of the mind...These are descriptions used to tell the tales of the Labyrinth of Madness. But these tales of the labyrinth are only legends, really, nothing more than stories used to frighten children at night - until a mysterious scepter is found, bearing within its crystal head a visage of insanity and terror, and also delivering a message: "Disturb not the Labyrinth of Madness again, and live a while longer." Now a powerful temple suffers from a tragic curse that is somehow linked to the labyrinth. Does there exist a group of heroes who can penetrate this dark and terrible place to life the curse...and survive? Labyrinth of Madness is a multiple-level, three- dimensional dungeon adventure, a puzzle within a puzzle, that commemorates 20 years of gaming with TSR. TSR 9503

The Grand Duchy of Geoff has recently been plagued by a rash of unusually weird and terrible monsters of an unknown sort. This western area, particularly the mountain fastness which separates the Grand Duchy from the Dry Steppes, has long been renowned for the generation of the most fearsome beasts, and it has been shunned accordingly -- save a handful of hardy souls with exceptional abilities. Within the last few months, however, a walled town not far distant from the area, and four small fortresses as well, have been destroyed by mysterious attacks! This classic adventure set on a crashed spaceship challenges the players assumptions, and expands on what's possible within the "fantasy" label. TSR 9033

Somewhere under a lost and lonely hill of grim and foreboding aspect lies a labyrinthine crypt. It is filled with terrible traps and not a few strange and ferocious monsters to slay the unwary. It is filled with rich treasures both precious and magical, but in addition to the aforementioned guardians, there is said to be a demilich who still wards his final haunt (Be warned that tales told have it that this being possesses powers which make him nearly undefeatable). Accounts relate that it is quite unlikely that any adventurers will ever find the chamber where the demilich Acererak lingers, for the passages and rooms of the Tomb are fraught with terrible traps, poison gases, and magical protections. Furthermore, the demi-lich has so well hidden his lair, that even those who avoid the pitfalls will not be likely to locale their true goal. In the far reaches of the world, under a lost and lonely hill, lies the sinister TOMB OF HORRORS. This Labyrinthine crypt is filled with terrible traps, strange and ferocious monsters, rich and magical treasures, and somewhere within rests the evil Demi-Lich. TSR 9022