Cheats:

Enter the following codes while playing: 
 
Code                  Result
costadeldosh        - Unlimited money
quickquickquick!    - Fast building
allbuildings        - All buildings 
[Shift]+[Alt]+$     - Extra 5,000
[Shift]+[Alt]+[F10] - All mission levels
[Shift]+[Alt]+[F9]  - All sandbox levels 
 
You can also press hold [Shift]+[Alt] and type allbuildings at 
the main menu to unlock all mission and sandbox levels. 


Alternate cheats:
Type or enter one of the next codes during game play:

Unlimited money - costa del dosh 
Fast construction - quick quick quick! 
All buildings unlocked - all buildings 
Extra $5,000; repeat as needed - [Shift] + [Alt] + $ 
All mission levels - [Shift] + [Alt] + [F10] 
All sandbox levels - [Shift] + [Alt] + [F9] 


All mission and sandbox levels:
Hold [Shift] + [Alt] and type allbuildings at the main menu.

Money Cheat 
During the game press  [Alt] + [Shift] + [4]
Each time you do this you will recive $5000 every time. 
Now that night club isnt so expensive. 

Unlock all levels
On the map screen press [shift]+[alt]+[u]