Generic
The historical version of Cortex combines attributes, skills, and different-sized dice for adventures across different genres and worlds.
Directory entry · Rusty Sellsword Design
- Entry type
- Rules engine
- Rules family
- Cortex
- Edition
- Cortex Classic / Cortex original
- Rules licence
- Not verified
01
What is it about?
The original Cortex was a Margaret Weis Productions engine used in games including Serenity, Battlestar Galactica, and Supernatural. It supplies a character and resolution foundation adaptable to different settings. Cortex Plus and Cortex Prime belong to its later evolution, but their procedures and options should not be assumed identical.
02
At the table
Combine dice associated with the character’s relevant capabilities and resolve actions using the selected edition. Each game adds the elements required by its own setting.
For module creators
Publishing modules
Publishing route unconfirmed
Permission to publish adventures for Cortex Classic/original is not confirmed. Cortex Prime's 2026 programme does not automatically grant rights to earlier editions.
Conditions
To publish using this edition, consult the rights holder or use specific permission applicable to the historical document. Franchises of games that used Cortex have separate rights. The absence of an open SRD does not itself imply a general ban on original adventures.
Permission and sources
03
Read the rules
Read the rules Source 1 Source 2Logos and credits
Logos identify the games listed and belong to their respective owners. Inclusion in this directory does not imply affiliation or endorsement.
Cortex Classic / Cortex original
Cortex Classic / Cortex original — Rusty Sellsword Design.
Original logo design, resized for the web.