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B/X Monster Reference IndexClick to magnify
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B/X Monster Reference Index


A handy index of over 500 B/X monsters. Essential stats are presented for each monster in a convenient table format.

The monsters in the Index include creatures from several sources. Some creatures have been converted from 1st Edition Advanced or other compatible rule sets as required. Each monster has two-letter code to help identify the original source book.

The PDF has been produced as reward for backers of the B/X Monster Reference Kickstarter project. Along with the PDF you also get a spreadsheet version of the Index, which may be customized in any way you want. It's particularly handy for making random encounter tables.

Print copies of the Index are also be available from

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Reviews (3)
Discussions (3)
Customer avatar
Tim S May 04, 2018 11:13 am UTC
I see "Adherer" & "Algoid" listed in the preview. How is this product "legally" able to include monsters that are not listed in the d20srd? Not bashing it -- genuinely curious.
Customer avatar
Peter R October 26, 2018 8:31 pm UTC
My research found both of those monsters to be open content. The Adherer is in Tome of Horrors and the Algoid is used in Pathfinder.
Customer avatar
Wouter H November 05, 2016 11:11 am UTC
While the contents are great, there seems to be some issue with rendering the font:
Notice how the number 8 and the letter g don't render well.
Customer avatar
Wouter H November 05, 2016 4:39 pm UTC
The issue seems to only occur in the Google Chrome pdf viewer, any other pdf viewer renders the document just fine!
Customer avatar
Jason W December 10, 2015 6:08 pm UTC
What edition does the information come from ?
Customer avatar
Peter R December 11, 2015 6:29 pm UTC
It's roughly half B/X and the half 1st Edtion Advanced, but everything is converted to B/X format. There's a post on my blog about the sources here:
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File Last Updated:
December 10, 2015
This title was added to our catalog on November 09, 2015.