Universe Primer is a 2003 role-playing game supplement published by Tower Ravens for Universe the Sci-Fi RPG .
Universe Primer is a supplement in which an introductory rulebook for Universe, The Sci‑Fi RPG presents a skill‑based d% system set in the Vortis Massif of the Antwaris Galaxy, where human empires and alien species vie along contested boundaries. [1] [2]