During game play type [ENTER] to open the chat window then enter one of the following:

HMPRETTYPLEASEWITHSUGARONTOP = Activate Cheat Mode
HMGOD = God Mode for Currently Selected Unit
HMREVEAL = Show Entire Map
HMNOFOG = Remove Fog of War
HMPETLEVA = 50,000 for All Resources
HMDVALEVA = 10,000 for All Resources
HMTIMER = Shows Timer
HMBUILDOZER = Fast Build
HMUSURP = Lose Control of Main Buildings
HMNOTECH = Buildings/Units Don't Depend on Upgrades
HMKINGDOM x Selected Unit Becomes Part of Player x's Unit (1-9)
HMSPAWN name Spawns Any Unit From the Game