Stuck on a single-player mission? These cheat codes can provide you with the 'edge' you're looking for. To use a cheat code, press the enter key, type in the code, and press enter again. The message "Cheat Code Enabled" should appear. Note that these codes only work in single-player mission.
Power overwhelming - God Mode
Show me the money - Gives you 10,000 gas and 10,000 crystal
Operation CWAL - Speeds constuction of buildings and units
The Gathering - Gives unlimited energy to all casting units
Game over man - Ends your game as a loss
Staying Alive - Prevents the mission from ending due to victory of defeat
There is no cow level - Completes the current mission
What mine is mine - Free minerals
Breathe deep - Free Vespene Gas
Something for nothing - Gives all upgrades
Black Sheep Wall - Shows entire map
Medieval man - Free upgrades to units
Modify the phase variance - Ability to build all buildings
War aint what it used to be - Disables fog of war
Food for thought - Ability to builds units beyond the support limit
Ophelia - Enter this to enable level skipping cheat. Then enter the level you want to skip to (i.e., "terran10") to go there.