While in the simulator press Ctrl + Alt + Shift + C. A prompt box with a flashing cursor will appear in the top left corner of the
screen. Type one of the following codes and press Enter to activate the cheat function. 
Effect - Code 

     All reward and opportunity buildings - i am weak 
     SimCastle construction, if Vinnie's offer was declined - zyxwvu 
     Donation offer from Vinnie - call cousin vinnie 
     Change the sea to salt water - salt on 
     Change the sea to fresh water - salt off 
     Raises the terrain by one - terrain one up 
     Lowers the terrain by one - terrain one down 
     Raises the terrain by ten - terrain ten up 
     Lowers the terrain by ten - terrain ten down 
     "Sorry, Money Doesn't Grow On Broccoli" message - broccoli 
     "Da Da Da Da Da Da Da Da Da BAT-man!" message - bat 
     "If You Build It, They Will Come" message - scurk 
     "The Llama Is A Quadruped" message - llama 
     "Duo Ragazzi's Easter Egg Palace: Old World Charm In A Post Modern Setting" message - easter egg 
     "If You Lived Here, You'd Be A Sim" message - sim 
     "Dozens Of Hidden News Ticker Reveals; Sims Encouraged To Collect Them All And Amaze Friends" message - help 
     "What Will He Think Of Next?" message - will wright 
     "Investment Tip: Buy Low, Sell High" message - erts 
     "Not Just Sports Games Anymore" message - electronic arts 
     "(Name of City) Picayune: The Finest In Scrolling Entertainment" message - ticker 
     "Money Does NOT Grow On Trees, Study Concludes" message - money 
     "Keep Trying And Maybe You'll Figure It Out" message - simcity 
     "Greetings Mayor, Your Sims Salute You" message - hello 
     "Mayor (Name of Mayor) brings (Name of City) To News Ticker Highlight" message - mayor 
     "Mayor Suspected Of Attempting Embezzlement; Ends In Failure" message - sc3k 
     "Secret Number Combination Causes Announcement In News Ticker" message - 1234 
     "Did you know that MAXIS spelled backwards is SIX AM?" message - maxis 
     "MOREMONEY Not Cheat Code, Research Concludes" message - moremoney 
     "Mayor Under Investigation For Possible Embezzlement" message - advisor 
     "FUND Not A Cheat Code, Do Not Type MOREMONEY, It Is Not A Cheat Code Either" message - fund 
     All extra gifts - pay tribute to your king 
     Stops advice - stop forcing advice 
     All power plants - power to the masses 
     All water plants - water in the desert 
     Recycling plant, waste to energy incinerator and normal incinerator - garbage in, garbage out 
     Description of City Hall set to "Miles and Miles of Red Tape"; date set to the year 1900 - i love red tape 
     Mortimer will say the indicated phrase. - force mortimer to say (phrase) 
     Moe will say the indicated phrase. - force moe to say (phrase) 
     Constance will say the indicated phrase. - force constance to say 
     Marla will say the indicated phrase. - force maria to say (phrase) 
     Randall will say the indicated phrase. - force randall to say (phrase) 
     Gus will say the indicated phrase. - force gus to say (phrase) 
     Karen will say the indicated phrase. - force karen to say (phrase) 
     The petitioners will say the indicated phrase. - force petitioners to say (phrase) 
     If you have connections to your neighbors, they will start trying to make deals - let's make a deal 
Unlimited Flying Objects ... 

                 CODE: UFO Swarm
                 EFFECT: After typing the cheat code, Set Disaster to UFO and watch an
                 extreme number of flying saucers descend upon your city. 

                 Bird's-eye View 

                 CODE: The Birds
                 EFFECT: Look closely for a flock of seagulls flying above your fair city. And tell
                 your Sims to cover their heads. 

                 Industrial-strength Detergent ... 

                 CODE: nerdz rool
                 EFFECT: Causes clean, hi-tech industry to be built in your Industrial Zones. 

                 All Buildings, All the Time 

                 CODE: (You don't need the Cheat window for this one.)
                 Open and close the Power Plants menu
                 Open and close the Rewards & Opportunities menu
                 Open and close the Garbage Disposal menu
                 Open the Landmarks menu
                 EFFECT: When you open the Landmarks menu, you'll find that ALL the buildings
                 in SimCity 3000 are now available to you! 

                 Simon Says 

                 EFFECT: The following codes cause the Newsticker to display something
                 unusual.
                 CODE: 
                 fund
                 advisor
                 moremoney
                 maxis
                 1234
                 sc3k
                 mayor
                 hello
                 simcity
                 money
                 ticker