Skins:

Note: The requirements to unlock some skins in the North American version of the
game have been changed.

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.