$10,000
Enter Columbus and give yourself a yellow flag for $10,000.

Free items
When you buy something and your income is red or low, save the game. Load it 
again and you will have your money back.

All campaigns
Note: This procedure involves editing a game file; create a backup copy of the 
file before proceeding. Use a text editor to edit the "game.dat" file in the 
game directory. Locate the line "Volume: -750, 0, -5??" and change it to 
"Volume: -750, 0, -581". Note: The "750" value may vary from game to game.

Codes
Hold [Ctrl] + [Shift] + [Alt] + W during game play. A prompt will appear at the 
bottom left corner of the screen. Type 2061 and press [Enter] at the prompt. 
Then, press A then press [Enter] to enable cheat mode. Enter one of the 
following codes to activate the corresponding cheat function.

Shift + M = Money
Shift + Z = Bricks
Shift + K = Cannon
Shift + H = Wood
Shift + T = Tools
gold = Gold
fastgame = All Building