Running With Scissors today announced their GDC08 presence with an Xbox 360 demo of the latest installment in the Postal series, Postal III. The demo is based on the Source engine, with the game under development for the Xbox 360 and PC. The game features linear story-driven missions, huge free-roaming areas, a wide array of real-life celebrities: from Playboy Playmates to film stars and musicians, numerous NPC factions, powered by reactive AI and complex behavior. Postal III is planned to be released during Q4 2008.