From the campaign:
Nuclear Renaissance is a unique game for tabletop player in that it was built around club or social play. The main premise was to make a game that included rules for multiple players to participate without bogging down. 5 players can get through a game in 2 or 3 hours. The core mechanics are simple. What makes the game come to life is the gang creation rules.
You can download the core rules for free off the Ramshackle Games website. What the new book adds is loads more options for making your gangs, plus full campaign rules.