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 SciâÂÂFi RPG presents a skillâÂÂbased d% system set in the Vortis Massif of the Antwaris Galaxy, where human empires and alien species vie along contested boundaries.