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Cult of the Blue Crab


An exciting lower-level adventure for any game system!

"I’ll take that ANY day over the overwritten garbage that passes for a modern adventure. " - Review at TenFootPole


The small city of Shallow Bay is plagued by a gang of smugglers who sell contraband alcohol and luxury foods to the people. The mayor’s expensive lifestyle has depleted the city coffers and the head of the city guard orders his men to investigate the smugglers and put an end to their activities. Unbeknownst to most, the smugglers are a front for a radical chaotic water cult that wishes to sweep earth free of “the wicked”. The money made with the contraband is intended to buy better equipment and hire powerful allies for an expedition to the lost Temple of the Chaos Elemental. By awakening this ancient evil the cult can take the first steps towards their ultimate goal of destruction and mayhem.


  • 6 full color maps of all the major sites in the adventure. (And even more maps here)
  • The write-up is suitable for any "F20" and OSR game - simply map the monster names to your monster manual! More detailed advice is given for 5th and 13th edition games in the appendix.
  • A flamboyant enemy that does not simply wait for the players to act but follows her own agenda.
  • Tips on how to run this adventure in one or in several sessions.

Buy it now and leave a positive review if you like this.

Cover of 2nd Part

Play "Flying Fortress of the Celestial Order", the exciting second part of the adventure, now!

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 Customers Who Bought this Title also Purchased
Reviews (4)
Discussions (3)
Customer avatar
Terry R February 12, 2020 12:49 pm UTC
Liked the set-up, hacked it around a bit to fit in my campaign. Made a slightly more complex hydrovampire for 5E which I am happy to send you if you are interested.
Customer avatar
Ralf G May 12, 2020 3:17 pm UTC
Hi Terry,
that sounds cool.
Customer avatar
Terry R May 20, 2020 1:07 pm UTC
How do I get it to you?
I can give you a pdf or the text for a document for both the Count and the Hydro Vampire stat block.
Customer avatar
Richard S January 20, 2020 2:48 pm UTC
Love this adventure. Noticed one typo -"Cult of the Blue Carb" on pg 1.
Customer avatar
Ralf G May 12, 2020 3:18 pm UTC
Oh dear, just like me to put a typo in the title on page one. :-)
Customer avatar
Gorgar W May 07, 2019 1:44 am UTC
5e and 13th Age are not OSR games, yet this is being shown under the OSR RULE SYSTEM category.
Customer avatar
Ralf G May 07, 2019 1:01 pm UTC
My reasoning was that the adventure as written can be used with OSR games because there are no rules in there but many of the assumptions hold true. Basically, with your monster manual, you can play this game. I hope this has not led to a disappointment.
Customer avatar
Gorgar W May 08, 2019 10:04 pm UTC
This is called bait and switch. The preview calls out 5e and 13th Age. If it is actually rules free then it should be under System Agnostic. You can't say something is for a game system, then claim, "but you can convert it to your game system!" The categories have no meaning then, and make shopping this site very difficult.
Customer avatar
Ralf G May 10, 2019 6:44 am UTC
To my understanding there are many OSR rule systems that show some variations - the adventure takes the most common ground of all of them. There is *also* some advise on how to convert it to other systems that are not OSR but it is not written for any of those games and you need to do conversion work ot get there.

I would like to better understand what in your opinion is missing to run this adventure with an OSR system without conversions. I would be happy to get your feedback on that so I can include these features in the next update.
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File Last Updated:
May 06, 2019
This title was added to our catalog on May 06, 2019.
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