To use these cheats you have to use the DOS version of the game, but that doesn't really matter. To activate them go to the single-player or network-player selection screen and type the desired cheat followed by Return; make sure there are no spaces and that you can't see what you are typing, you'll hear a beep if you've entered them successfully. Enter the game, press C, and a + sign should appear beside the date. This means the cheat mode is activated. Now type:
speed471 Speed up network play
worker902 Buy workers whenever you want
gangster822 Convert workers into gangsters whenever you want
weapons473 Buy any weapon for the gangster
tenents127 Select any tenant at any time
fences673 Build any fence whenever you want
loans039 Borrow any amount of money from the bank
estates131 Buy any estate without limits
houses738 Select any house at anytime
build909 Place houses and hit Ctrl to build instantly
actions674 Use all undesirable actions on easy level
gadgets337 Build every gadget
missions824 Use Alt-I to toggle missions off
complain840 Use Alt-C to turn complaints off
cadets552 Use Alt-P and Alt-M to supply police cadets and mob bribes
