Press ENTER on the numeric keypad for a cheat menu

     You  can  find  boxes that'll take you to a secret level in level
#'s 8,9,14,15, and 17

Sacrafices:
Imps                    they go up in price each time you buy one 
                        by 150..each time you sacrafice one they 
                        go down in price by 300
Fly & Spider            Get a Warlock
2 Beetles               Complete current manufacturing
2 Flies                 Completee current research
Beetle & Spider         Get a Dark Mistress
3 Spiders               Get a Bile Demon
Ghost                   All Chickens Die
Chicken                 '              '
Vampire                 All mosters diseased
2 Bile Demons           All monsters turned into chickens (temporary)
Horned Reaper           All monsters angry
Dark Mistress, 
Bile Demon,& Troll      Get a Horned Reaper

Anything not mentioned here does nothing