PAKSZLGA        Only 1 ship and 1 life
AAKSZLGE        8 ships and 8 lives
SZXONIVG        Infinite lives
AEXXAVNY        Minimum damage taken from walls
ZASSTLAA        Start on level 3
IASSTLAA        Start on level 6
AASSTLAE        Start on level 9
ZASSTLAE        Start on level 11
AASSZLPE        Start with more money
SVEKOVON        Weapons use up no energy
UNSPLSLE        Reversed gravity for planet 1
VTSOZVTO        Reversed gravity for planet 2
KVOPATGP        Reversed gravity for planet 3
XNVOTSZE        Reversed gravity for planet 4
ETXPGTAZ        Reversed gravity for planet 5
OTUOYVPX        Reversed gravity for planet 6
UTEOPTLZ        Reversed gravity for planet 7
AOXOLVEV        Normal gravity for planet 8
AEXZGVSY + AEXXAVNY     No damage taken from walls
AEUIOXYA + GXKSOZSA     Items for free