Bubble Bobble New - Super mode:
Select a saved game, go to the title screen, then press Right, R, Left, L, Select, R, Select, L.
Bubble Bobble Old - Super mode:
Select a saved game, go to the title screen, then press Left, R, Left, Select, Left, L, Left, Select.
Bubble Bobble Old - Power-up mode:
Select a saved game, go to the title screen, then press Select, R, L, Left, Right, R, Select, Right.
Bubble Bobble Old - Original mode:
Select a saved game, go to the title screen, then press L, R, L, R, L, R, Right, Select.
Bonus items:
Enter one of the following codes at the high score screen. Then start a new game.
| Beer mug | KTT |
| Flamingo | STR |
| Fork | SEX |
| Knife | ... |
| Octopus | TAK |
| Soda can | I.F |
| Soda can | KIM |
| Soda can | MTJ |
| Soda can | NSO |
| Soda can | YSH |
