What is the Codex Integrum Series?

A Complete System for Historical Campaigns

Written by martial arts practitioners with real-life fighting experience and based on five hundred year old combat manuals penned by the true Masters of the ancient martial arts, the Codex Integrum series is a window from your game into the lethal reality of combat in the ancient world.

  • Historically Plausible Character Creation
  • Rules for Adventuring in a historical setting
  • Combat Rules based on real historical martial arts
  • Magic that works the way medieval people believed it worked

Fast-Paced HEMA-Inspired Combat for TTRPGs

Emphasizing action, combat maneuvers and the deadly interplay of attack and defense with a minimum of complexity, Codex Martialis is designed to make combat fluid, dynamic and intuitive, in order to bring a greater level of immersion and excitement by adding new tactical options to your gaming session.

Hit the ground running with new options that won’t bog down your game. 

If you want your game to really feel like a fight: this is it.

Magic Based on Real Medieval Sources

Suitable for a medieval historical or fantasy RPG setting, Codex Superno takes you to a place where someone was just as likely to rely on a magic talisman for protection as they were upon steel armor and the edge of a sharp sword.

The world of Copernicus, Albrecht Dürer, and Christine de Pisan was awakening to reason and the liberating promise of technology, but it was also a realm of sorcery and the occult.

Prepare if you will to enter the capricious, mystical, syncretic realm of a character you might never have encountered before: the Renaissance Magus.

Stranger than Fiction: Discover the Real Medieval World

The Codex Guide to the Medieval Baltic is a general historical overview of the Baltic region in 1456 AD suitible for use by gamers, historical fencers, re-enactors, military historians, and anyone curious about life in Northeastern Europe 500 years in the past.

You have been to Narnia and Middle Earth, to Cimmmeria and even the hideous plateau of Leng. But you have never been to this place.

If you want to know what the medieval world was really like, this is your ticket to a land that is nothing like what you imagined, and is far more interesting, nuanced and engaging than any fantasy genre you’ve ever explored.

Check out the Quick Start Guide for Free!

Codex Martialis: Quick Start Guide is an abridged version of the Codex Martialis: Core Rules sourcebook that features new combat options for your game, based on martial-arts manuals from the Renaissance era, including:

  • Overhauled Combat Rules
  • Historical Martial Feats
  • Real Weapons and Armor of the Ancient World

About the Author

Jean Henri Chandler

Jean Henri Chandler is a historical researcher, fencing instructor, and game designer from New Orleans.

Jean has taught historical fencing at SDA NOLA since 2004, and has competed in multiple fencing tournaments, winning a Bronze medal at the 2012 Houston Longsword open (“Fechtschule America”) in 2012. He has given lectures on medieval history. at the Higgins Armoury in Worcester, Ma, at the University of Massachusetts at Amherst, and at the Université de Bourgogne in Dijon France. Jean has published peer reviewed articles in the academic journal Acta Periodica Duelletorum, for an academic blog out of University of Bern, Switzerland, and for the Historical Fencing blog HROARR out of Gothenburg, Sweden. In 2008 he released the Codex Guide to the Medieval Baltic, a historical atlas for 15th Century Northern Europe.

Jean designed Codex Martialis, a historical combat system for the OGL in 2002. He wrote books for The Riddle of Steel in 2004 and 2006, and wrote books and articles for the Dying Earth RPG of Pelgrane Press from 2004-2007. In 2008 he released Codex Martialis as the first of a series of sourcebooks for historical TTRPGs.

You can see the complete catalogue of Jean’s work at his official website.

Sam Irving

Dr Sam Irving is a software developer currently based in New Orleans, and is a fencing instructor and game designer from Baton Rouge. He is the principal instructor at the Broadsword Academy, New Orleans. Sam is a certified Cateran Society fencing instructor and has ten years of broadsword fencing experience. In 2019 Sam won the Baton Rouge Open Rapier tournament, and he has won four singlestick tournaments in Galveston, TX.

In 2019 Jean and Sam formed Codex Integrum LLC and began releasing new titles based on the Codex Martialis system, with a focus on historical Central Europe in the 15th Century.