Edit Unit
Hold Ctrl + Shift + U. You can now change all atributes except type of unit.
Change Attitude
To alter your council's attitude and time period, enable Cheat Mode, then press Ctrl-Shift-T.
Invincibility
Type "god" during gameplay to become invincible.
Use Enemy City
Infiltrate your enemy's cities. Press "V" and move diagonally into an enemy city and press ENTER. You can now change the city's productivity and disband unit.
Hint: Huge war
Start the map editor and create a small island. Put in as many civilizations as possible. A huge war will begin.
Update throne room
While in cheat mode, press Q.