The Galactic Underground 3 is a new Player Supplement for the Battlelords of the Twenty-third Century RPG. The GU3 contains "I Was Just Growing Up" tables for all the races in the Battlelords core book and supplements, detailed information on mega-corps, NPCs, information for PCs who want to adventure as part of the Alliance military, Galactic Control and Galactic X, and scores of new matrices for the Ikrini, Gemini, and Jezzedaic Priests.