Hold [Ctrl] + [Shift] and type cheater-cheaterwimp.
Unlimited money
Hold [Ctrl] + [Shift] and type cheatercheaterpeter.
Alternate ending sequence
Hold [Ctrl] + [Alt] and type bellybutton.
Embezzlement mode
Buy a large amount of real estate. Hold [Ctrl] + [Shift] and type petercheatercheaterwimp. Note: This cheat may only be enabled approximately ten times. To disable the cheat counter, save your city, quit the game, restart the game, and load your city. This function is not present in early versions of the game.
Play demonstration city
Begin the game, open the "System" menu, and select the "Save" option. Save the game, then exit. Restart the game again and load the saved game to control the demo city.