SISTR: A Rare Geometry for Mothership RPG Operating Manual for Sci-Fi Horror RPG


Shipping to United States: $5.50

80 page A5 Hardcover with rules and stats for
SIS/TR as well as a viscous starship adventure
written by George Holland and Justin Sirois.
Book specs: sewn binding, printed endpapers,
A5 size, quality interior paper stock.

“Brooding atmosphere, a.i. gone wrong, and a rich tapestry of gore-soaked hallways ringing out with the screams of the damned await you in SIS/TR: A Rare Geometry. If you like your horror Weird, you won't be disappointed. This thing drips.” _ _ _ Jarrett Crader

Mothership RPG

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Reviews (2)


i ordered this as a father’s day gift for my dad, the book is stunning and was delivered ahead of schedule! super excited to play this module with him

Backed the SIS/TR kickstarter and had to get the book

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