The Flintstones
Invincibility:
Enter MS_STONE_MAKES_WEIRD_JELLY as a password, where
"_" indicates a space.
View credits:
Enter HOAGIE_TAKES_COLD_TREES as a password, where
"_" indicates a space.
Level skip:
Enter BARNEY_GRABS_BLUE_TREES as a password, where
"_" indicates a space. Pause game play then press X
jump to the next level, or press B to jump to the ending.