To use a cheat code, press the [Ctrl], [Shift], [Alt] and [C] keys at the same time. This will bring up a cheat window for you to type a code.

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!

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!

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

CODE: i am weak
EFFECT: Makes buildings, utilities, zoning, transportation, planting trees and creating surface water free.

CODE: call cousin Vinnie
EFFECT: A new petitioner item will appear in the Meet window, announcing a "Local Fundraising Event." This, um, "businessman" will offer you some cash, no questions asked. Should you choose to accept his offer, you'll notice a little extra cash in your coffers.

CODE: zyxwvu
EFFECT: This code isn't available to just anybody, you have to prove your integrity first. Use the "call cousin Vinnie" cheat and refuse his immoral offer. Then use the "zyxwvu" cheat and the beautiful SimCity Castle will appear in your Rewards menu. In addition to looking cool, the castle boosts land value, aura, and does other wonderful things to the surrounding area.

CODE: garbage in, garbage out
EFFECT: Makes all garbage buildings available.

CODE: power to the masses
EFFECT: Makes all power buildings available.

CODE: water in the desert
EFFECT: Makes all water buildings available.

CODE: Salt on
EFFECT: Changes the sea to salt water.

CODE: Salt off
EFFECT: Changes the sea to fresh water.

CODE: Terrain one up
EFFECT: Raises the terrain.

CODE: Terrain one down
EFFECT: Lowers the terrain.

CODE: Terrain ten up
EFFECT: Raises the terrain.

CODE: Terrain ten down
EFFECT: Lowers the terrain.

CODE: pay tribute to your king
EFFECT: All rewards become available.

CODE: I love red tape
EFFECT: All ordinance become available.

CODE: let's make a deal
EFFECT: Neighbor/Business Deal(s) offered.

CODE: nerdz rool
EFFECT: High tech industry.

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