For use with Cairn

Discover an array of hacks, thrilling adventures, and expansions for the Cairn SRD ecosystem by Yochai Gal.


Thálassa is an adventure game for one facilitator (the odigós) and at least one other player.

Players act as fearless explorers of the Mediterranean of the Mythical Age, studded with mysterious islands, thick forests, legendary creatures, labyrinths and dangers.


Intrepid spacers ply the vastness of the Five Galaxies in search of fortune and glory. This is Plerion, a sci-fi hack from Cairn designed to play radiant space opera.

Plerion is an adventure game for one referee and at least one other player. Players act as hardened spacers exploring, exploiting and commerce through the vastness of space in the far future. 

Golden Idol

Golden Idol is an archeological thriller action-adventure game set in the modern world.

You are members of LARA (Legendary Artifacts Recovery Agency), charged with discovering and finding valuable artifacts around the world in remote places, among the vestiges of lost civilizations.


Welcome to Taintedweald, a post-apocalyptic forest-crawl set in a small region of an undefined world.

This mini-setting inspired by the works of Hayao Miyazaki  is compatible with Cairn

SCP for Liminal Horror

Welcome to the SCP Foundation, a world of unexplained phenomena and anomalous objects that threaten the very fabric of reality. 

You will immerse yourself in the horror and mystery of the Foundation, using the Liminal Horror system to navigate the dangers of containment breaches, rogue agents, and unimaginable terrors from beyond the veil.