SZNUIYVG Infinite lives in main game
SXUEZPVG Infinite lives in sub-game
AAUGSZZA Start with 1 life
IAUGSZZA Start with double lives
AAUGSZZE Start with triple lives
VGKKNXUK Start with 3-way gun
SXSTYNVK Don't take damage from bullets and collisions
VTNZXVVK Don't take damage from spikes
SZUOAOVK Don't take damage from bullets and collisions in sub-game
XYXUUOEN Autofire--main game
AAKUOOZA Use with BIO Code 11 for im-proved autofire with normal gun
LAUKOZAA + XTUKUXVU Start with 3 life energy capsules