During play, turn the Caps Lock key on, hold down CTRL and type
SPAMSPAMSPAMHUMBUG. Turn the Caps Lock key off, and press F9. Now
enter the following cheats (case sensitive): 

set none        -  Full map
cgk max         -  CGK levels to maximum
crop pop        -  All croplands receive pods
crop kill       -  Kills all pods on map
egg boy returns -  Causes an earthquake
kill            -  Kills currently selected unit
minimap on/off  -  Toggles the minimap on and off if working listener is available