The world has long since ended — its gods buried, its machines silent, its cities reduced to rust and spores.

But something still stirs beneath the ash: you — a sentient moss that remembers what the world tried to forget.

You are the Mossiah, a wandering consciousness of green ruin traveling across the remains of creation toward MESSA, the god-core pulsing faintly at the planet’s heart. You are not human, nor spirit, nor machine — but a memory that refuses to die.

As you journey across the hex map — provided in both color and black-and-white editions for players who prefer luminous decay or stark ruin — you will roll a single d6 to determine your direction, your distance, and the places you uncover. Each turn reveals something strange and holy: the Bone Orchard, where skeletons grow like trees; the Rust Basilica, where rain prays in green; the Mirror Dunes, where your reflection moves before you do.

You act — to observe, explore, rest, interact, flee, or fight — and record what follows in your journal. Each entry is a verse in the world’s final psalm, a slow and meditative chronicle of survival through rot. Success brings revelation; failure brings change. Both shape your becoming.

MOSSIAH is a minimalist solo TTRPG about persistence, decay, and the afterlife of faith. It asks not how to save the world, but how to remember it — and what kind of god remains when everything else is gone.

When you reach the center hex, you will face the truth of MESSA —
and decide whether the memory of life is worth keeping.