Here are some cheats and tips for the game Blaster Master.
SZUGYIVG Infinite lives
AAEGZLZA Start with 1 life
IAEGZLZA Start with 6 lives
AAEGZLZE Start with 9 lives
GZSOEEvK Infinite homing missiles
GXKPEOVK Infinite Thunderbreaks
GXSOVXVK Infinite multi-warheads
IAEKPLAA Start with 5 of each weapon
ZAEKPLAE Start with 10 of each weapon
YAEKPLAE Start with 15 of each weapon