After starting a game, press Ctrl+K and that will give you access to the Map Editor and Senario commands to alter game play.

• Y = Reveal Map
• Shift+F1 = Create Unit
• Shift+F2 = Technological Discovery
• Shift+F3 = Switch sides/set view
• Shift+F4 = Change/set energy credits
• Shift+F5 = Change Year
• Shift+F6 = Kill Opponent
• Shift+F7 = View replay
• Shift+F8 = View Movies
• Shift+F9 = Edit Faction Diplomacy

Click on the menu option and select scenario and you will get a complete listing of all cheats and how to access them in the game.