Extra money
While playing a game, hold [Shift] + [Alt] and keep pressing $.
Various Codes
Enter codes during gameplay:
All Buildings Unlocked: all buildings
Faster construction: quick quick quick!
Insant: $5,000: Alt + Shift + 4
Infinite money: costa del dosh
Topless people: Shift+Alt+T
Unlock all levels: At the map screen press Shift+Alt+U