Bonus gloves:
Have the Game Boy Advance game Sonic Advance or Sonic Advance 2 in the cartridge slot to unlock the pink gloves in Maniac mode. Alternately, get 55,555 Heart Points.
Have the Game Boy Advance game Sonic Battle in the cartridge slot to unlock Amy Rose’s gloves in Maniac mode. Alternately, get 77,777 Heart Points.
Have the Game Boy Advance game Chu Chu Rocket in the cartridge slot to unlock the fist gloves in Maniac mode. Alternately, get 88,888 Heart Points.
Skip Story mode level:
To skip a level in Story mode, tap the blue button at the lower right corner of the “Start/Quick Start” menu that appears before a level. Tap the yellow button that appears. Tap the small button that appears and select “Yes” three times. This can only be done once on each difficulty setting in Story mode.
Sound recorder:
To record using the microphone, at the title screen, press Down Y. To play back the recording, press Down Y again.
Completion bonuses:
Beat Story mode to unlock the “Sound Test” and “Another Story” mode options.
Hair Color option in Maniac mode:
To unlock the “Hair Color” option in Maniac mode, find 10 Rabbits.
Studio option in Maniac mode:
To unlock the “Studio” option in Maniac mode, find 30 Rabbits.
Find 30 Rabbits to unlock the “Studio” option in Maniac mode.
Mini-games:
Unlock the following mini-games for play in the specified modes by performing the corresponding tasks:
Bull mini-game – Beat Scene 8 to unlock the Bull mini-game in Survival and Time Attack modes.
Cake Battle mini-game – Beat the Snowball Fight mini-game in Story mode against the girl to unlock the Cake Battle mini-game in Two Player mode.
Eye mini-game – Defeat the Eye in Story mode to unlock the Eye mini-game in Multiplayer mode.
Seashells mini-game – Beat Scene 16 to unlock the Seashells mini-game in Survival and Time Attack modes.
Snowball Chase mini-game – Beat Scene 23 in Story mode, where you chase the girl, to unlock the Snowball Chase mini-game in Multiplayer mode.
Swimming On A Tree mini-game – Beat the Swimming On A Tree mini-game in Story mode to save the girl from the crocodiles and unlock the Swimming On A Tree mini-game in Multiplayer mode.
Table Hockey mini-game – Defeat Disk in Story mode to unlock the Table Hockey mini-game in Two Player mode.
Unlockable other difficulty modes:
Unlock the listed difficulty modes by performing the corresponding tasks:
DIFFICULTY – HOW TO UNLOCK
Hard difficulty – Successfully complete the game under the Normal difficulty setting.
Heaven difficulty – Successfully complete the game under the Hell difficulty setting.
Hell difficulty – Successfully complete the game under the Hard difficulty setting.
Birthday greeting:
The girl at the main menu will greet you by saying “Happy Birthday” on the date that you entered as your birthday in the system settings.
Holiday greetings:
The girl at the main menu will greet you according to the holiday it is, such as on December 25, January 1, ect. You can also simply set the system date to a holiday date if you want to hear the greeting.
Easy completion on “Stealth”:
On level 21, when you have to bury your friends, simply hit them all in one place to waste les time