The Caverns of Thracia for D&D 3.5 is a revised edition of the 1979 classic megadungeon by Jennell Jaquays. Originally published by Judges Guild
, this 3.5-compatible version was released in 2004 through a partnership with Necromancer Games Key Features of the 3.5 Edition
The 2004 revision updated the legendary dungeon crawl to the d20 system, expanding it into a mini-campaign setting for characters level 3–8. Expanded Content
: Includes the original classic levels plus additional dungeon levels, new magic items, and new monsters. : A 128-page softcover book. Authorship : Updated by Jennell Jaquays and James Collura. Greek Theme caverns of thracia 3.5 pdf
: Retains the iconic Greek mythology-inspired setting, featuring a fallen empire, a Minotaur King, and a death cult. PDF Availability & Legal Issues
Finding a legal PDF of the 3.5 version (Necromancer Games) is currently difficult due to a 2021 controversy involving Judges Guild. : Most major digital retailers, including DriveThruRPG
, cut ties with Judges Guild, leading to the removal of many legacy products. Secondary Market : Physical copies are often found on collector sites like Noble Knight Games Modern Alternatives (DCC & 5E) Goodman Games The Caverns of Thracia for D&D 3
released a new "Original Adventures Reincarnated" version. While not 3.5-specific, these editions include high-quality scans of the original material which can be easily adapted. : Pdfs for the newest editions are being released on the Goodman Games Store following their crowdfunding fulfillment. Two-Volume Set
: These new versions typically include a reprint of the original adventure alongside a modern conversion (either for 5th Edition or Dungeon Crawl Classics).
The original was designed for characters levels 1-3. The 3.5 version is significantly deadlier because 3.5 characters have more hit points but also face monsters with higher Attack Bonuses. Recommended: Start at Level 3 for 3
The original module is notoriously deadly (it was published in the "Save or Die" era). The 3.5 version adjusts CRs for an expected party of 4-6 characters starting at level 3. The final encounter is set at roughly CR 9, creating a full campaign arc from levels 3 to 7.
In the pantheon of classic tabletop roleplaying adventures, few names carry as much weight as The Caverns of Thracia. Originally penned by the legendary Paul Jaquays (now Jennell Jaquays) for D&D’s first edition in 1979, this module has been hailed for decades as a masterclass in non-linear dungeon design. For modern players and Dungeon Masters running the revised 3rd Edition (v3.5) rules, the hunt for a compatible version often leads to one specific digital file: the Caverns of Thracia 3.5 PDF.
Whether you are a nostalgic grognard looking to convert old memories or a new-school DM searching for the pinnacle of "sandbox dungeon" design, this guide will walk you through everything you need to know about this rare conversion, where to find it, and how to use it at your table.
The original had vague "Find secret door on 1-2 in d6." The 3.5 PDF converts these to specific Spot or Search DCs (e.g., DC 20 to notice the loose stone). It also adds Use Rope and Climb checks for the infamous "Chasm of the Mists."
Once you have your Caverns of Thracia 3.5 PDF, do not just open to page one and start reading. The module is non-linear. Here is how to run it successfully.
