Hidden vs. CPU option: Enter PERKINS as a case-sensitive password.
More options: Enter one the following case-sensitive passwords to
activate unlimited continues, all Bosses in Boss mode, all Drill
mode levels, and all CPU characters in vs. CPU mode.
KIKMAHP
DKRORCR
STKZJGH
Hint: Dancing zombies: Type the names as they appear during the credits.
When a section is completed, the zombies will begin to dance.
