Substratum Protocol Book cover type:Paperback gain clues and knowledge of

gain clues and knowledge of the anomaly

In the full sized journal

As you draw cards

Playing the Game

and explorers

Substratum Protocol Book cover type:Paperback gain clues and knowledge ofWhen 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 is playable as both a solo game or guided by a GM for 26 players. Don't forget to grab your Expedition Journal and