Welcome to Icosa.Here, mutant vagabonds stalk subterranean ruins of chrome for power beyond reckoning. Here, armored knights pilot roaring biplanes for gold and glory. Here, wizards roll polyhedrons and strive to understand the rules of the reality in which they live.By chance or by design, yours is the unlucky fortune to be born into a world forsaken by its Gods and nearing its end. But this is your story, and stories are not written about those who wither and surrender under the callous decree of fate before they have had their say.So fight—fight! against the dying light. Fight against the final pen-strokes of history. If you must live in this time, live as much as you can.

The Icosa RPG is a work in progress, and all content found here is subject to change.This site is meant to serve as a free preview of the full version of the game and as a convenient reference for players and referees. As such, and for the sake of conciseness, this site omits many subtleties, situational rules, examples, and artworks, and does not include all spells, items, artifacts, regions, factions, and lore.You can support the development of the game and get instant access to the latest version of the full game by becoming a Patron.

THE SETTING

Pierce the veil to the world of Icosa and explore one of its many weird regions

HOW TO PLAY

Study the strange science of bridging the gap between our world and the world of Icosa

ABOUT

Learn more about the project, its creators, and how you can support the development of the game

THE SETTING

THE WORLD OF ICOSA

The world is dying.
The Gods have Abandoned it for their homes behind the sky.The world is languishing.
Civilization after civilization rises and crumbles to dust.The world is Cursed.
The ruins and artifacts make us sick and change us.But they also bring us power.

Icosa is a world near the end of its existence. The better part of all that will ever be has already come to pass, and the ruins of countless eons before are scattered throughout the world like bones on the settled seafloor. But life goes on in this world, and one can even find a certain strange beauty in its dogged tenacity. After all, there is still some time—time enough, perhaps, to build a better world in which to ride out the final days.According to legend, the Gods—or the Outsiders, as they are more commonly known—vanished from the world long ago in an apocalypse called the Departure. The once-great civilization of Icosa was cast to ruin.They say that before the Departure, in the Age of Attendance, anything was possible. Humans lived for centuries, traveled to other worlds, and created unfathomably beautiful works of art. Now, in the Age of Abandonment, the scattered few civilizations that still stand cling desperately to survival.A Curse ravages the world—the legacy of the Outsiders. It twists the land and its people into strange new shapes. Wizards and priests cast dice to commune with divinity. Warlords and kings spill rivers of blood for scraps of territory. Ruiners trespass in the realms of the ancients in search of relics of the Mystery, the magical force that once allowed humanity to work miracles under the supervision of the Outsiders.The world is dark, wild, vast, and empty. But there is light in the darkness, order in the chaos, and substance in the nothingness for those with the will to draw it forth.