TTRPG Resources

Assorted tabletop RPG materials – specifically:

  • Orphans of Merlin Ars Magica setting and related resources
  • Assorted Coriolis RPG resources

Orphans of Merlin – Stonehenge Setting

Overview and Major Covenants

A Stonehenge setting inspired by the 4th edition supplement Heirs of Merlin. Details of the major covenants (Blackthorn, Burnham, Cad Gadu, The Chines, Sanguis Vento), list of magi, and an overview of the conspiracy that lies behind the Tribunal’s politics.

Minor Covenants

Six minor covenants – Dawn’s End, Dens, Murkfell, Rossan, Scholas Pythagoranis, and Tintagel – including their likely development over a ~20 year saga.

House Mercere

The five members of House Mercere in the Stonehenge Tribunal in the Orphans of Merlin setting, and how communications and the functions of their House operate (or don’t).

House Rules

Reworking the Normandy Tribunal Tournament

Making the Normandy Tournaments more fun for players, viable for their characters, and manageable for storyguide.

Magical Masonry

How would a mage with Terram and a Masonry craft skill go about using magics to build a covenant for themselves, or structures for their allies? A rules-light framework suitable for starting Terram specialists or experienced generalists, and for their storyguides.


Coriolis Ship Builder Spreadsheet

A spreadsheet in (ODS and XLS formats) that allows the selection of class, shipyard, modules and features, to automatically calculate ship stats, debt and repayment. (NOTE: If Chrome blocks the download of spreadsheet files, try another browser. When last tested, Chrome blocked these files but Firefox and Edge did not.)

Curing Dark Wounds and Curses

Wound festering from the bite of a Darkmorph? Pulsing sphere of sentient ooze planted spores in your arm? Here’s what to do about it! (A GM’s framework for recovering from the taint of Darkness.)

Coriolis Table Rules & Clarifications

A house ruling on automatic successes (to empower the players and make the game feel less arbitrary) and some clarifications on how ships work.

Assorted Coriolis Talents

A dozen Talents for Coriolis characters.

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Thirty years of game design has vanished into the aether. That’s just how it is. The tabletop RPG supplements that I wrote in the ’90s (a million or so words of commissioned work) are now just footnotes in games history. Computer games where I (usually as the producer or project director) had an influence on design, and others’ games that I modded for, have now been forgotten as technology moves on. So I figured I’d at least create a page for my current homebrew projects – starting with the setting of my current Ars Magica saga and some Coriolis musings, and maybe later adding some stories/adventures. – Kevin Hassall, 2022.