Explore a post-war galaxy with your mech best friend in this lo-fi solo & duo TTRPG.

All new GM-less RPG that requires no prep & minimal setup. Grab the book, a Deck of Cards & Two D6 to journey through the unforgiving dungeons of Mayfalls. Inspired by souls-like games to give you a brutal experience.

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.