Nintendo DS
Nintendo Wii
PC
Playstation 3
Sony PSP
Xbox 360
Older Systems
Dreamcast
Gamecube
Gameboy Adv
Gameboy Colour
Macintosh
Nintendo 64
Playstation
Playstation 2
Xbox
Other
DVD Eggs
Extra hidden
difficulty level
Unlockable 4th difficulty, "gekimuzu".
To obtain a 4th difficulty, you need to get the highscore on
all 4 modes of gameplay.
Zoo keeper: 1200000+
points needed.
Tokoton 100: 1800000+ points needed.
Quest mode: 10000+ Yen needed.
Time attack: 600000+ points needed.
After getting all 4 high scores, a 4th difficulty appears in the top line of the option menu.
Dreamcast - DVD Eggs - Gameboy Advance - Gameboy Colour - Gamecube - Macintosh - Nintendo 64 - Nintendo DS
Nintendo Wii - PC - Playstation - Playstation 2 - Playstation 3 - Sony PSP - Xbox - Xbox 360