Substratum Protocol is available now!

Substratum Protocol is a solo+ survival mystery TTRPG utilizing step-down dice and card draw mechanics, and is playable as both a solo game or guided by a GM.

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.