Cheat codes:
Other Codes: Put in these codes while playing. Hit ENTER, then type in a code

ROCK ON 1000 Stone
LUMBERJACK 1000 Wood
ROBIN HOOD 1000 Gold
CHEESE STEAK JIMMY'S 1000 Food
MARCO Reveal Map
POLO Remove Shadow
AEGIS Fast Build
NATURAL WONDERS Control Nature
RESIGN You Lose
WIMPYWIMPYWIMPY Destroy Yourself
I LOVE THE MONKEY HEAD Gives VDML
HOW DO YOU TURN THIS ON Gives a Cobra car
TORPEDO# Kill Opponent #
TO SMITHEREENS Gives a Saboteur
BLACK DEATH Destroy All Enemies
I R WINNER You Win

Command Line Cheats:
Use one of the following command line parameters to start the game

800 Change screen res to 800x600
1024 Change screen res to 1024x768
1280 Change screen res to 1280x1024
autompsave Enable Auto save
Mfill Cure display problems with some video cards
Msync Cure SoundBlaster AWE freezes
NoMusic Turn Off music.
NormalMouse Standard mouse pointer
NoSound Disable all sounds except during FMV sequences
NoStartup No pre-game FMV sequences
NoTerrainSound Turn Off all terrain sounds

Other Cheats:
Ctrl + T - New Resource Menu
Ctrl + Q - Faster Construction
Ctrl + P - Get Immutable building
Ctrl + C - Show end sequence

Make Unit Faster:
When you click the make a man button on the toolbar click on the little flag where you can place the man you just started to create and keep clicking in the same place as fast as you can. It should double the time to make a man.

Cheats For DEMO version:
Bring up the chat box by pressing ENTER then enter these codes

pepperoni pizza (gives you 1000 food)
coinage (gives you 1000 gold)
woodstock (gives you 1000 wood)
quarry (gives you 1000 stone)
reveal map (reveales map but not fog)
no fog (lifts fog)
gaia (control animals not people)