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The Leviathan's Tomb
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The Leviathan's Tomb


An ambitious lord scrambles to reclaim his family's keep, a fortress of solid iron that rises from a storm tossed sea. The true nature of the keep has been lost to time, but an ancient evil stirs beneath the waves. Will you brave flooded dungeons, face brutal sea monsters, and outwit the masters of the Leviathan's Tomb?

This is a one-shot adventure that can be set in any game world. It's incredibly tough, and will push your players to their limits. Teamwork, cunning, and courage is all you need to get through this adventure but a little luck won't hurt.

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Customer avatar
Gautham T November 20, 2016 7:59 pm UTC
I ran this adventure in roll20 and was totally happy with it. I used it as a first adventure for my party, and I think it works great that way.

My party was a group of 5 1st level characters, but I used the scaling notes with each encounter to reduce the challenge somewhat, and it worked out almost perfectly, with a couple of hairy moments but nothing that felt unfair.

Based on my experience, though it's a fairly straightforward dungeon crawl, I suggest that DMs (especially new DMs) give the short adventure a couple of read-throughs. Trying not to give anything away here, but there are a few traps that trigger in a particular way that I didn't exactly figure out before play that I mishandled slightly during my session.

There's some great history to discover here and a solidly on-theme adventure.

My only criticism - and it's very slight - is that the adventure doesn't necessarily involve any truly compelling NPCs, but one - a local priest who's been through an...See more
Customer avatar
May 30, 2016 7:48 pm UTC
Is there a Map available for Player Use, i noticed the map in the back is more for the DM's use, i was wondering if there was one available to allow for Players to use?
Customer avatar
Robert W June 22, 2016 4:11 pm UTC
Sorry I missed your comment. That is a great idea! I will look into creating one. Hope you enjoy the adventure.
Customer avatar
September 29, 2016 4:32 am UTC
Was the player map ever created? I have been checking this adventure out and I'm pretty sure I'm going to run it in Fantasy Grounds, and having a map I can plug into that would be awesome. Either way, this looks like it's going to be a great adventure. Clearly some effort went into its creation. Look forward to more of your stuff!
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Nod H March 14, 2016 5:05 am UTC
Wanted to double check, is this the same adventure that used to be on DTRPG published via savevsboredom?
If so, will you be releasing "The Witch's Fields" here on DMGu?
Customer avatar
Robert W March 22, 2016 8:25 pm UTC
It sure is. If you bought it twice on accident, and didn't get a refund, let me know and I'll send you something for your trouble. As for Witch's Fields, I am afraid that is simply begging to be overhauled for Curse of Strahd. Hey, want to playtest it when it's ready?
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Brian R January 14, 2016 4:29 pm UTC
Just downloaded. Looks cool, but you should note that it is designed for a party of 5 3rd level characters. There are adjustment notes for weaker or stronger parties. It appears that every encounter has a blurb detailing how to adjust the difficulty up or down. Kudos!
Customer avatar
Robert W January 15, 2016 4:16 pm UTC
Thanks! Also note this thing is tough. Everyone needs a gimmick and mine is 'Dark Souls of D&D.' So enter the Iron Keep at your peril! Not all of the monsters in the 5e Monster Manual appear in the OGL so I got creative with a few to avoid IP issues. Hope you enjoy!
Customer avatar
Michael S January 14, 2016 3:19 am UTC
This document looks very professional, and the map looks beautiful. I have not had a chance to read through it carefully yet, but the adventure looks very interesting, good job!
Customer avatar
Jay A January 19, 2016 11:44 pm UTC
Thanks for the compliment on the map!
Customer avatar
January 13, 2016 12:52 pm UTC
Hey, when I try to download this I get "FAILED - The requested source file could not be found.: d:/RawPDFs/rpg/Dungeon Masters Guild/SVB001_LeviathansTomb_DMGuild.pdf". I have downloaded other pdfs from this site with no issue. Any idea what is going on?
Customer avatar
Robert W January 13, 2016 10:16 pm UTC
Seems like there was a bug with the system, it should be OK now. Feel free to send me an email at and I will send you our other adventures for free since you had a problem. Hope you enjoy it!
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File Last Updated:
January 12, 2016
This title was added to our catalog on January 13, 2016.