Below you will find various cheats found across the web and usenet groups. Be advised, reading below will lower your reputation by 10 points...
Enlight's latest patch has eliminated this 'feature'!
Foreign spys: If an independent villager suddenly finds the urge to join your empire, click on the unit to bring up his stats. In the upper left corner you will see a small square with the color of your race. Click inside the square. If the color underneath is any color but yours, you've found a spy. Eliminate him or use him as you see fit. I usually explore the rest of the map and then march him into his home village and lop off his head; but that's me.
Periodically, I'll empty a building of units and check each unit's colors just to make sure a spy hasn't infiltrated my ranks.
Rant: The real problem with cheats is that once you know a good one it becomes extremely difficult not to use it.
Thought you might want to add this to your site.
Cheat menu: !!!@@@###
B - Finishing selecting building
C - $1000
M - Turns fog of war and unexplored off, slowly fades back to original
T - All Tech Advances & Scrolls (1 level at a time)
U - Immortal King
Z - Fast Build
; - Adds 10 population (random race)
/ - 1000 food
[ - +20 combat
] - +20 leadership, research, mining, manufacture, prayer
' - +20 spying
-- Terrance LaCoursiere
Add a cheat here.