First, you have to enable the Caps Lock key, then hold Ctrl and enter SPAMSPAMSPAMHUMBUG. Now, disable Caps Lock, press F9 and enter the following codes:
set none: Full map
cgk max: Maximum CGK level
minimap on: Enable mini-map if working listener is available
minimap off: Disable mini-map
egg boy returns: Earthquake
crop pop: All croplands have pods
crop kill: Kill all pods on map
kill: Kill selected unit