Castlevania

OXNGLZVK        Infinite lives
AXOGOPIE        Start with 40 power hearts
ASOGOPIA        Start with 80 power hearts 
SXXXYAAX        Infinite time 
GZOGYUSE        Keep weapons after losing a life 
ZEUTAYAA        Gain rapid fire shots on weapon pick-up
KZSSEZKA + KXESUZKA     Weapons don't use power hearts 
PANKXPGA + PANGSAGA     Start with 1 life
AANKXPGE + AANGSAGE     Start with 8 lives