While playing the game, click on the pjone at the bottom left hand corner on the screen. Go to "Options" and press secret code. Type in #*#3333# to increase your popularity to the full (125/125) with all your contacts.
New York Nights: Success in the City
Input on Secret Code
Password - Effect
#*#6002999# - Decrease Money
#*#1111# - Increase Beauty, Health, Humor, Culture
#*#9999# - Increase Beauty, Health, Humor, Culture, Popularity
#*#6001999# - Increase Money
#*#2222# - Increase Popularity
#*#4002# - Unlock Mini Game (Bartender)
#*#4003# - Unlock Mini Game (Singer)
#*#4001# - Unlock Mini Game (Waiter)