Pen Pen TriIcelon cheats, and Codes for DC.
To unlock every costume in the game, you must place first in all courses and course variations two times.
Play as Hanamuizu
There are several reported ways to unlock Hanamuizu:
Alternate introduction sequence
If you set a new record, the introduction sequence is changed to an alternate FMV.
The CD can be used in a PC compatible CD-ROM. There you should find wallpapers.