The OFFICIAL game system for the Coriolis: The Great Dark on Foundry VTT!

This system provides character sheets and items for your play, if you would like to have tables and other pre-made official content check out the offical core ruleset Module - https://freeleaguepublishing.com/shop/coriolis/

The core system features no content. It only provides support for various mechanics required to play the game:

• Dice roller
• Actor sheets:
  • Explorer
  • Crew
  • Bird
  • Rover
  • Shuttle
  • NPC
  • Creature
• Item sheets:
  • Talent
  • Equipment
  • Weapon
  • Armor
  • Affliction
  • Bird Power
  • Crew Maneuver
  • Rover Upgrade
  • Shuttle Upgrade
  • Vehicle Weapon
  • Creature Attack
  • Creature Ability

Note: The game system is compatible with Foundry V13.

1. Go to the setup page in Foundry and choose Game Systems
2. Click the Install System and search for "Coriolis: The Great Dark", or paste in this manifest link
3. Create a Game World using the Coriolis: The Great Dark system and start it
4. Read the Game System's Manual Journal Entry in the system's compedium
5. Enjoy!

Note: Premium modules are not mandatory to play the game as the game system is free to use, but they will save you weeks of preparation.

1. Get the premium modules at the Free League's shop
2. Retrieve your codes in your mail box (contact Free League if you did not recieve anything after 15 minutes, also check your spam box)
3. Activate the codes in your Foundry account: visit foundryvtt.com, go to your account settings, in "Purchased Content", and paste in the codes
4. Launch the Foundry client (and make sure you have updated Foundry to V13)
5. Install the Coriolis: The Great Dark premium modules and some of the recommended third-party modules (optional, see below)
6. Create a new World with the Coriolis: The Great Dark system and start it
7. In the options, activate the modules
8. Refresh and import the content. Have fun!

List of modules confirmed to be stable with the Coriolis: The Great Dark game system.

• Dice So Nice
• Year Zero Engine: Combat
• Quick Insert - Search Widget

Hod Publishing - https://hodpub.com

• Hod Publishing
• Foundry VTT
• Discord:
  • The Foundry
  • Year Zero Worlds

See the changelog for a complete list of changes applied to the system.

• Source Code: All source code (javascript, hbs, scss, as well as system templates and the like) are Copyright © 2025 Hod Publishing, and licenced under the GNU General Public License v3.0.
• Foundry VTT: The project is created following the Foundry VTT Limited License Agreement for module development.
• Icons: Icons in the .static/assets/icons/ folder are courtesy of Game-icons.net and licenced under CC BY 3.0.
• Fonts: The fonts used in this project carry their own licences.