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Monstrum Encyclopedia
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Monstrum Encyclopedia

Suggested Price $3.95

Monstrum Encyclopedia is your premier resource for adversaries. This tome not only includes detailed lore on these creatures but also encounters specially tailored to showcase their abilities and tactics.

I will update this product regularly to add new creatures and their encounters.

As I add more content, I will also increase the price.


So get in early, because after you purchase, you will get all the updates at no additional cost!

For use with the Genesys roleplaying game.

This supplement includes:

• Fourteen new adversaries
• Three encounters customized for an adversary
• Two traps
• A new magic item.

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Reviews (5)
Discussions (6)
Customer avatar
Dylan P July 17, 2020 3:15 am UTC
Been a little while since the last update on this. I was thinking having some varieties of trolls would be interesting - I'd like to see your take on their regeneration and weaknesses to different damage types.
Customer avatar
David M July 17, 2020 4:19 am UTC
Good idea. I will see what I can come up with!
Customer avatar
Cody D December 24, 2019 8:51 pm UTC
This is a great start! I'd love to see this expanded in a similar way that the AD&D Monster Compendiums were done during 2nd Edition! Adding them in a 3-ring binder and being able to just keep adding to it! And this is now the best game for that!
Customer avatar
David M December 25, 2019 10:28 am UTC
Hey Cody! Thanks for the comment. I loved those old compendiums and have the three ring binder on my shelf.

I am working on an full length adventure right now, and plan to add the monsters I am using there to this. I will be adding encounters too, but they may be coming a little slower than adversaries.
Customer avatar
Cody D December 25, 2019 4:35 pm UTC
That's awesome! Oh sure, adventure writing and encounter creation takes time and testing. I can't wait to see what you share with us!
Customer avatar
David M December 16, 2019 3:18 pm UTC
Update 12-14-2019
Added Young Chimera
Added Spirit Host
Added Haunted House
Add Minotaur
Add Hydra
Add Young Hag
Add Questing Hag
Add Hag Coven
Add Alpha Hag
Updated Medusa
Customer avatar
David M December 06, 2019 5:32 pm UTC
Adding hydra after my Expanded Player's Guide comes in. I will also update all the existing adversaries using the guidelines in that book.
Customer avatar
David M December 08, 2019 4:34 pm UTC
Have the book in my hands and have begun the update process.
Customer avatar
David M November 26, 2019 6:29 pm UTC
Update 11-26-2019

Add “For use with the Genesys roleplaying system,” to the product description
Moved title up the page
Update subtitle to “A Genesys Bestiary”
Minor grammar fixes
Changed stat block to CRB style
Add Ghost
Add the Lost Piper
Customer avatar
Richard B November 22, 2019 1:54 am UTC
I would give this a 5 star rating, as the Author threw in spending Advantages/threats list on a variety of things players could use. Even though I wished it was a bigger Pdf, Author most be new to the foundry and wanted to see how everyone took to his stuff first before doing more stuff for the foundry. to see more stuff from him soon.
Customer avatar
David M November 22, 2019 2:30 am UTC
Thank you for the kind words.
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Original electronic
Scanned image
These products were created by scanning an original printed edition. Most older books are in scanned image format because original digital layout files never existed or were no longer available from the publisher.

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File Last Updated:
December 14, 2019
This title was added to our catalog on November 19, 2019.