Originally developed by Argonaut Games for PS2 and Xbox, under the name Roll Call, then Zero Tolerance, Urban Chaos is now being developed by a newly formed company, Rocksteady Studios, a London based company formed by Jamie Walker (former Creative Director, Argonaut) and Sefton Hill (former Head of Production, Argonaut) and boasts an extremely talented team of 18 professionals with a wealth of experience in the games industry.

A city in turmoil, overrun from the threat from organized gang crime, is in need of special help. The Mayor has declared a state of emergency and formed an elite counter-gang division of the Police Department: Unit T-Zero. In the middle of a full-scale riot, work with the emergency services in a desperate fight to prevent your city being brutalized by vicious gangs.