DD6C-DD66 Infinite lives--switch off effects to get a password
FDB2-D4AF Start with 10 lives--first game only
DFB2-D4AF Start with 1 life--first game only
A689-0FD7 Infinite shots for most weapons
BBB3-D40F Start with 99 hearts --1st life only
9DB3-D40F Start with 50 hearts --1st life only
D22F-07D7 No energy lost when hit by some enemies
6D6D-DF06 Stop timer
5E6D-DDA6 Slower timer
FE6D-DDA6 Faster timer