Various cheats

Code                    Result
medusa                  Villagers Become Medusa
diediedie               Death to Everyone
resign                  You Resign
reveal map              Shows Entire Map
pepperoni pizza         1000 Food
coinage                 1000 Gold
woodstock               1000 Wood
quarry                  1000 Stone
no fog                  Remove Fog of War
hari kari               Suicide
photon man              Receive a Nuke Trooper
gaia                    Control the Animals
flying dutchman         Juggernaughts Turn Into Flying Dutchmen
steroids                Instant Build
home run                Win the Scenario
bigdaddy                Car with Rocket Launcher
big bertha              Heavu Catapults Have Greater Range
icbm                    Ballistas Get 100 Range Points
hoyohoyo                Priests Speed Up
jack be nimble          Catapults Fire Peasants
e=mc2 trooper           Futuristic Trooper
upsidflintmobile        Chariot Archers Speed Up


Make Priests Have HP 1200 and Super Speed
     Type  HOYOHOYO  before  researching at the temple. One technology
doubles hit points from 600 to 1200.

Population 200 (submitted by yusuf)
     To  make  population 200 - press start, click "Programs" and then
select  "Microsoft  games" and select "Age of Empires" and right click
on  it.  Select  "Properties".  Find the target button. Something like
this   will  be  shown  -  "C:\Program  Files\Microsoft  Games\Age  of
Empires\Empires.exe".  All you have to do is add limit=200 at the end.
Then  start  "Age  of  Empires"  by start menu and select "Multiplayer
game"  and  "Internet  TCP/IP  connection".  Select  any name and play
without  any  other human. You will find that your population limit is
now 200.