No specific info about version 6.1. Please visit the main page of Knockout City™ on Software Informer.
Go for a trip to San Francisco and get to know the Golden Gate and Alcatraz.
Big City Adventure: New York City is a very enjoyable hidden object game.
Green City 2 is a city management simulation game with an ecological theme.
Virtual City is a comprehensive city simulation game.
Help the adventurers find the ancient city and reveal all its mysteries.
Virtual City 2: Paradise Resort is the sequel to Virtual City.