Starcraft 2 – Wings of Liberty: Free Units and Structures Cheat
In Starcraft 2: Wings of Liberty for the PC, there is a cheat increase make units and structures cost zero resources. During the game hit the Enter key to bring up the message prompt and type in moredotsmoredots to enable the cheat.
Note that once cheats are turned on, you will not get achievements for that game.
Check out my other article for more Starcraft 2: Wings of Liberty Cheats.