Cheat Codes Go to the Regional Display and press Shift+4. It gives you $500,000. Don't use it after you reach $30,000,000 or you will start LOSING $500,000. Extra Income: Begin the game and click on the icon to make a tunnel, then you hold the SHIFT button pressed while you click in on the wall with water. After that you will see the following phase one time: estymated income 3.000.000.000! Note: This will only work one time.