A fragment of humanity has become stranded in a faraway system, trying to survive as best they can, sending expeditions dig for metals and other resources from the surrounding planets, moons and asteroids. The most valuable finds, however, are in the ruins left behind by Builder civilization, long ago.
A few days ago, on the asteroid moon Moubarra 4, five ore prospectors disappeared while setting up a claim at a newly appeared fissure. Their final messages were of underground structures and high levels of Blight, which forced the rescue team sent by the local mining station to turn back. Now you have been sent to help.
This is the introductory adventure from the quickstart rules of Coriolis: The Great Dark, slightly adjusted for convention play. Premade characters are included. Prior experience from some other MYZ engine game by Free League/Fria Ligan is helpful, but not necessary. Coriolis: The Great Dark draws its inspiration from pulp archaeology, deep sea diving, and mountaineering, but also has some suspense/light horror themes related to the emptiness of space and the many unknowns regarding the ancient Builders. The adventure features some combat, but with relatively light rules. The GM is also running another session of the game in Finnish, with the name Taivaskone.