Gygax expanded the tournament adventure by adding a wilderness area, with part of it based on earlier work by Rob Kuntz.

[2] 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.

The introduction, with instructions that the Dungeon Master read it aloud to the players, outlines that there is a treasure in the Yatil Mountains south of the Greyhawk realm of Perrenland.

[2] The treasure is a remnant of the wealth amassed by the archmage Iggwilv,[2] former ruler of Perrenland, prior to her presumed death at the hands of the demon Graz'zt, whom she had "imprisoned and forced into servitude.

After the wilderness are two lettered encounters: the "Gnome Vale", which includes a map for their lair, and "The Craggy Dells", where humans and orcs are capturing hippogriffs to sell.

[5] This original version consisted of eight loose sheets in an outer folder, with a zip-locked bag; only several hundred copies were printed.

[4] The Forgotten Temple of Tharizdun (1982) starts off from an event in The Lost Caverns of Tsojcanth and features monsters from the Fiend Folio.

[12] In 2007, it was updated to v3.5 and included as one of three parts in Iggwilv's Legacy: The Lost Caverns of Tsojcanth, an adventure available online from Wizards of the Coast.

S1 through S3 were standalone modules that could be easily dropped into any DM's campaign, but Tsojcanth is firmly based in Gary's World of Greyhawk.

"[7] A remastered version of the adventure will be published in the anthology Quests from the Infinite Staircase for Dungeons & Dragons 5th edition on July 16, 2024.

Lawrence Schick, in his 1991 book Heroic Worlds, described the adventure as "A monster-filled labyrinth in the classic mode: kill 'em, rob 'em, and leave.

The reviewers felt that the adventure's defining moment was when the players find Iggwilv's "fabled treasure": her vampire daughter Drelzna.

Bambra noted that the module ended a long time off for Gary Gygax, and was "very tough" and that good play was stressed in the introduction.

Sub par play quickly ended the story, but the rewards of powerful magic and the satisfaction of completing a difficult task made it worthwhile.