Enigmatic marble monoliths await discovery on isolated asteroids. Prolonged proximity to them breeds vivid, disturbing nightmares. Then, they vanish. In their wake emerge anomalies with perilous, impossible abilities. And that can be very profitable.

MARBLE NIGHTMARES is an in-universe two-page brochure bestiary, compatible with the Mothership Sci-Fi Horror RPG 1e. It details 4 horrors born from mysterious monoliths, each with their own gimmick. Included is a mapped mining ship to use as a setting for monolith mining jobs.

Ideas on how to use this resource:

As a one-shot, set the crew to excavate a monolith. On their way back, nightmares start to haunt them...

Drop a monolith as a MacGuffin or random hazard into any campaign.

Throw the 4 horrors into your adventures.

Have the crew find the pamphlet or partly redacted version of it for immersion or potential adventure hook.