Megapolis: A City of Supers (2006)

Megapolis: A City of Supers
Megapolis is a sourcebook for BASH! Basic Action Super Heroes. This book outlines a fictional major US city somewhere in the Northeastern United States. In this book you'll find many things you've been needing for your superheroic campaign including:
A complete history of the city and outline of its burroughs.
Interesting locales ranging from the affluent to crime-ridden. This city has everything from a hidden magical world to a haunted suburb.
Heroes. Dozens of Heroes and teams for your own Heroes to join.
Villains. LOTS of Villains for your Heroes to do battle with, including the mysterious HUSH.
New Powers, Advantages, and optional rules.
Includes a print friendly version to save you ink
(taken from publisher's blurb)