User summary: This is the rulebook for Journeyman, a hard sci-fi RPG that primarily uses 10 sided dice. Skill checks are made by adding a die roll to your relevant skill value. Classes or professions determine your starting skills and equipment only. The rulebook includes stats and descriptions for various alien races and tables for randomly generating planets or entire solar systems. Also included in a section on space travel are equations pertaining to the theory of special relativity.