Felix the Cat

APUGAGZO Start with 9 lives
IPUGAGZP Start with 6 lives
APUGAGZP Start with 1 life
AEUYKPPA Infinite lives
AAEENAZA Hearts can't be replenished from bottles
GAEENAZA Bottles replenish more hearts
AAEENAZE Bottles replenish even more hearts
GZUKOSVK Never lose current weapon (acts as invincibility too!)--unless you
fall off the screen
ZAOSOZPA + APNSOXPO Pick up 1 head and get 2!