While playing, press CAPSLOCK, then hold CTRL and type SPAMSPAMSPAMHUMBUG. Press CAPSLOCK (the light is now off), press F9, and enter the cheats (all lower case):

Effect                               Code 
Full map                             set none 
Enable mini-map (need listener)      minimap on 
Disable mini-map                     minimap off  
Maximum CGK level                    cgk max  
All croplands have pods              crop pop  
Kill all pods on map                 crop kill  
Earthquake                           egg boy returns  
Set character as indicated player    set 
Kill selected unit                   kill  
Kill indicated player                kill 
Re-map key to cheat                  bind  
Spawn object at location             place