Turn the Caps Lock key on and type 
SPAMSPAMSPAMHUMBUG while holding down
the Ctrl key. Turn the Caps Lock key off,
and hit F9 to enter the following cheat 
code (which Must be in lower case):

set none - Lets you see the entire map.
cgk max - Puts your CGK level to maximum.
crop pop - All croplands on the map receive pods.
crop kill - Kills all pods on the entire map.
egg boy returns - Causes an earthquake.
kill - Kills currently selected thing.
minimap on/off - Toggles the minimap on and off, 
                 but only if you have at least 
                 one working listener.

-Scott May