
OGL Core Rulebooks
The titles in this section are complete rulebooks based on the D20 rules set. All are Open Content, and all open the doorway on a completely new setting, from the age of ancient antiquity to worlds dominated by the cyberpunk genre. Each is a gateway into using the D20 rules in a brand new way.
4 products
Sort by
Sort by
OGL Steampunk eBook
Sale price£3.99
OGL Ancients eBook
Sale price£3.99
OGL Cybernet eBook
Sale price£3.99
OGL Horror eBook
Sale price£3.99
Free shipping
Free UK & US shipping
on orders over £100 or $150
FREE PDF
With every book purchase
get a FREE PDF to download
Secure payment
Your payment information
is processed securely.
Contact us
Need to contact us? Just send us an e-mail at sales@mongoosepublishing.com