Passwords
Debug Level

Password                Effect
GH1D0RA                 Debug level


Level Passwords

Password                Effect
HR6AMU6696 UCUGXK       Earth
XOKQWPT6TH NQJ59D97T637EJupiter
XE5NYP2RL3 NNWGUJ9LT6RR Mars
Y4RKAQMDR1 G6S4XP       Mars (last hex)
H46NAP5CX2G8HK3H        Neptune
4J62STRMH9 CWU58L       Planet X
WR65MWHPGR WCGXOJ       Pluto
7JRNOO4NNU 9WLJT3       Saturn (last hex)
X STAR                  Start on Planet X
L4HM2FSEUE D7846ASSP4WXFCK	Uranus


Level Passwords for Real Challenge

On the password screen, enter the first three letters of any of the planets (Except Earth and Planet X) to start at that level, with Godzilla and Mothra at Lvl 1. See how far you can get on the harder planets!
Password                Effect
JUP                     Jupiter @ level 1
MAR                     Mars @ level 1
NEP                     Neptune @ level 1
PLU                     Pluto @ level 1
SAT                     Saturn @ level 1
URA                     Uranus @ level 1


Misc Passwords

Password                Effect
S0UND                   Access Sound Test
DESTR0Y ALL MONSTERS    Fight all the final monsters
M0NSTER 0               Fight Monster Zero at the beginning of the game
(Leave Password blank and hit end)	Monsterless Debug Level
sea m0nster             Takes you to planet X with a strange effect. It makes Monsters spawn from the center of the playing board. A glitch or unfinished code maybe?
START T0 END            View opening/closing scenes


Secrets
Mecha-Godzilla will always miss

When battling Mecha-Godzilla with Mothra, make sure you are lined with his neck and have the tip of your upper wings just to the right of the "A" in "Godzilla", now keep firing your eye beam and Mecha-Godzilla's lasers will always miss and go right through your wings.