Constructor Codes -

Cheat mode (DOS version):
Type one of the following codes and press [Enter] at the single player selection or network player selection screens. A sound will confirm correct code entry. Press C after game play begins. A [Plus] character will appear besides the date to confirm that the selected cheat is active. Note: To cheat with a saved game, display the map and player screen. Then, enter the desired cheats, select the saved game from the "Load Saved Game" screen. Begin game play and press C to enable the selected codes.

Effect	Code
Faster network game	speed471
Buy worker at any time	worker902
Convert worker into gangster at any time	gangster822
Buy any gangster weapon	weapons473
Select any tenant at any time	tenants127
Build any fence at any time	fences673
Borrow any amount of money from bank	loans039
Buy any estate without limits	estates131
Select any house at any time	houses738
Press [Ctrl] when placing house for instant building	build909
Use any undesirable action on easy level	actions674
Build any gadget	gadgets337
Press [Alt] + I to toggle missions	missions824
Press [Alt] + C to toggle complaints	complain840
Press [Alt] + P for police cadets, [Alt] + M for mob bribes	cadets552
Switch teams in single player mode	teams418
Play any map with any number of players	maps751

Hint: Get rid of black marks and get money:
If you are getting too many black marks from the council, get a level two house, and make the tenants "The Punks". After awhile they should start to complain about a hedge and will give you black marks if you do not drastically decrease their rent. Drastically decrease their rent, and you should get some white marks. Then, put their rent back up again. Do this repeatedly until you have no black marks remaining. Then, either replace them, agree to their demands, or make them have children. If you continue to do this, you will receive many white marks which can be exchanged for cash (100 marks for $10,000).