Skins:
Unlock the following skins by performing the corresponding tasks. Note: All of these work in the Japanese version of the game. Some do not work in the North American version of the game:
45 Degrees – Complete all normal puzzles in puzzle mode.
Aback – Play level 40 in challenge mode.
Auto Mobile Industry – Complete level 2 in vs. CPU mode.
Big Elpaso – Play level 70 in challenge mode.
Brash – Complete level 8 in vs. CPU mode
Chinese restaurant – Complete level 9 in vs. CPU mode.
Da-Di-Do – Play level 52 in challenge mode.
Dark Side Beside The River – Play level 36 in challenge mode.
Fly Into The Sky – Play level 95 in challenge mode.
Get up and go – Play level 90 in challenge mode.
Holiday In Summer – Play level 60 in challenge mode.
I Hear The Music In My Soul – Play level 32 in challenge mode.
Japanese Form – Complete level 1 in vs. CPU mode.
Just… – Play level 28 in challenge mode.
Lights – Play level 100 in challenge mode.
Meguro – Play level 80 in challenge mode.
Mekong – Complete level 5 in vs. CPU mode.
Moon Beam – Complete level 10 in vs. CPU mode.
Morning Completes – Accumulate 20 hours of game play.
My Generation – Play level 75 in challenge mode.
Please Return My CD – Complete level 3 in vs. CPU mode.
Prime Factor – Complete all X2 puzzles in puzzle mode.
Rodent – Accumulate 10 hours of game play.
Round About – Play level 8 in challenge mode.
Shake Ya Body – Play level 16 in challenge mode.
Sister Walk – Play level 48 in challenge mode.
Slipping – Play level 12 in challenge mode.
Spirits – Play level 85 in challenge mode.
Square Dance – Play level 20 in challenge mode.
Strangers – Play level 56 in challenge mode.
Take A Dog Out A Walk – Play level 65 in challenge mode.
Talk 2 You – Play level 24 in challenge mode.
The Bird Singing In The Night – Complete level 4 in vs. CPU mode.
The Spy Loves Me – Complete level 7 in vs. CPU mode.
Tin Toy – Complete vs. CPU mode.
Urbanization – Play level 4 in challenge mode.
Water, Flower, And Lights – Get 999,999 points in challenge mode.
Whoop-De-Do – Complete level 6 in vs. CPU mode.
Working In The Hole – Play level 44 in challenge mode.