Omerta : City of Gangsters Trailer (Gamescom 2012). Join us on Facebook : facebook.com ! City of Gangsters is a simulation game with tactical turn-based combat focusing on the activities of organized crime in Atlantic City in the 1920's. Omerta : City of Gangsters Trailer (Gamescom 2012). The game will be available on both PC and Xbox 360 in November 2012. Suscribe now to get all gameplay trailers and videos !