Purpose-built system for solo and multiplayer mysteries enables flexible play options for any group size
Unique dice and card draw resolution mechanics allow for dynamic, chainable actions and abilities
36 unique clues and 120 events provide a rich, evolving narrative experience
Full-color softcover book with illustrations enhances immersion and storytelling
Quickly builds unique characters at the table for personalized gameplay
When the anomaly appeared at the Earth's core, the Substratum Protocol was initiated. You are the best and brightest scientists we have left, our last hope to stem the apocalypse. You are the Substratum Expedition Team. Descend. Learn. Survive. A solo+ survival mystery RPG using step-down dice and card draw mechanics, Substratum Protocol
Format
88-page full-color softcover book
Recommended Age
12 years or older
Players
2-6
Material
Cardboard
Includes
Digital PDF package with guidelines, lore tables, bestiary, and solo journal accessory pack (on select bundles)
Dimensions
6 x 8.5 inches (A5 size)
4.9
14 ratings
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Great Service and Community Support
We've dealt with Pandion as a local business and as an RPG publisher. Their product is fun, and they have always been responsive and supportive to our store. We are delighted to be able to carry Substratum Protocol and their other games.
T
Tim · June 6, 2025
Substratum Protocol: Great mood, rules fit
Love this game. Well bound, funny bit on page 43/44, the breathless system really fits the theme. Also, has to be said in this age of Kickstarters ... the game arrived on time as expected.