Custom title screen sound:
To record a clip using the microphone that will play during the introduction music, at the title screen, hold Down Y to record the clip. To preview it, press Down X at the title screen. To hear it slower, press Down/Left X and to hear it faster, press Down/Right X at the title screen.
Birthday greeting:
To receive a Birthday greeting from the girl at the main menu, play the game on your birthday.
Holiday greetings:
Play the game on holidays such as December 25th or Janury 1st to hear a holiday greeting.
Girl without top:
To remove the girl at the main menus top, change the DS system language to “Japanese”. Alternately, beat the game on Hell difficulty.
Girl Screams:
To hear the girl at the main menu scream, touch her in various places.
Credits sounds:
During the credits, touch the Sega logo to hear the classic “Sega” sound. Touch the other text and images that appear to hear other sounds. After the credits and theme song ends, touch the person sleeping in the audience to hear him snore.
Alternate girl costumes:
To unlock alternate girl costumes, find all the hidden rabbits. Additionally, costumes can be unlocked by playing games in Memories mode. You will earn one star for each level you complete.
Body 2 and 3:
To unlock Body 2 and 3, beat story mode on Normal difficulty.
Sound test:
To unlock the sound test option, beat Story mode on Normal difficulty.
Hard difficulty:
To unlock Hard difficulty, beat Story mode on Normal difficulty.
Hell difficulty:
To unlock Hell difficulty, beat Story mode on Hard difficulty.
Bonus hairstyles:
Have the following Game Boy Advance games in the cartridge to unlock the corresponding hairstyle in Maniac mode:
GAME – HAIRSTYLE
Chu Chu Rocket – NiGHTS hairstyle
Puyo Pop – Puyo hairstyle
Sonic Advance 1 – Sonic hairstyle
Sonic Advance 2 – Sonic hairstyle
Sonic Advance 3 – Chao hairstyle
Sonic Battle – Ulala hairstyle
Sonic Pinball Party – NiGHTS hairstyle
Space Channel 5 Ulala’s Cosmic Attack – Ulala hairstyle
Note: Complete the game on Hell difficulty to unlock all bonus hairstyles.
Unlockable hairstyles:
Unlock the following hair styles for Maniac mode by performing the corresponding tasks:
HAIRSTYLE – HOW TO UNLOCK
Chao wig – Complete Hell mode.
Lilac ponytail – Find 1 rabbit.
Long blonde hair with blue ribbon – Find 19 rabbits.
Long blonde hair with police Hat – Find 130 stars and 40 rabbits.
Long blue hair – Find 49 rabbits.
Long blue hair with cowgirl hat – Complete Hard mode.
Long brown hair with nurse’s hat – Find 100 stars and 30 rabbits.
Long brown hair with white visor – Find 6 rabbits.
Long gray hair with chicken hat – Find 100 stars and 35 rabbits.
Long gray hair with red and white hat – Find 29 rabbits.
Long gray hair with Santa hat – Complete Hard mode.
Long gray hair with white bunny ears – Find 59 rabbits.
Long orange hair – Find 5 rabbits.
Long pink hair with halo – Find 182 stars and 60 rabbits.
Long purple hair with white cap – Find 39 rabbits.
NiGHTS wig – Complete Hell mode.
Puyo Wig – Complete Hell mode.
Short green hair – Find 3 rabbits.
Sonic wig – Complete Hell mode.
Ulala wig – Complete Hell mode.
Unlockable costumes:
Unlock the following costumes for Maniac mode by performing the corresponding tasks:
COSTUME – HOW TO UNLOCK
Angel’s costume and wings – Find 182 stars and 60 rabbits.
Blue and white dress – Find 75 stars.
Blue and white schoolgirl uniform – Find 20 stars.
Blue chicken outfit – Find 100 stars and 35 rabbits.
Blue polo shirt and white skirt – Find 15 stars.
Cheerleader uniform – Find 10 stars.
Cowgirl outfit – Complete hard mode.
Green and white armor – Find 170 stars and 55 rabbits.
Green schoolgirl outfit – Find 182 stars.
Green top and brown shorts – Find 30 stars.
Gray and white dress – Find 100 stars.
Nude – Complete Hell mode.
Orange and white dress – Find 130 stars.
Pink dress – Complete Normal mode.
Pink top and bunny tail shorts – Find 50 stars.
Police uniform – Find 130 stars and 40 rabbits.
Red and white Christmas outfit – Complete Hard mode.
Red swimming costume – Find 170 stars.
White bikini and denim hotpants – Complete Normal mode.
White nurse uniform – Find 100 stars and 30 rabbits.
Unlockable shoes:
Unlock the following shoes for Maniac mode by performing the corresponding tasks:
SHOES – HOW TO UNLOCK
Bare feet – Complete Hell mode.
Blue knee-high boots – Find 9 rabbits.
Brown shoes with long white socks – Find 31 rabbits.
Cowgirl boots – Complete Hard mode.
Green and white armored boots – Find 170 stars and 55 rabbits.
Green elf boots – Get 51 stars.
Purple high heel shoes – Find 7 rabbits.
Red high heel shoes – Find 4 rabbits.
White high heel shoes – Find 2 rabbits.
White high heel shoes and blue leg warmers – Get 41 stars.
White knee-high boots – Find 11 rabbits.
White trainers – Find 21 rabbits.
Carts level hint:
Look at the top screen to see which lane the person is flying down. Make sure to pay close attention, then firmly stroke a straight line down the path the man in the cart will soon come through. The spike-balls will move just enough for the cart to get by. This level is otherwise ridiculously difficult to complete.
Plants Boss strategy:
First, remain at the right-hand or left-hand corner of the level. Eventually a vine will come down inches away from you, but won’t hit you. Burn it and go back to the corner. Be as close to it as possible but remaining tucked in a corner so the vines don’t hit you. When necessary, begin throwing your stakes of fire into the creature’s mouth. It is recommended that you throw them one at a time if needed since it’s better than losing one third of your health just from hitting his teeth once.