Another World
At the main menu screen that reads, "Game Start", Time Attack", and "Options", enter L button, up on D-pad, R button, and down on D-pad. This will give you access to "another world" full of new puzzles. After entering this code, a tiny character will appear in the lower right portion of the screen. Select "game start" and when you select "Puzzle Game", it will say "Another World" underneath it. Press A and you'll go to another world!
Submitted by Hero ([email protected])
Bonus Characters
Start a new Puzzle game, and at the screen where you choose your path, press Left, Left, Up, Down, L, R, L, R, L + R. If you do it it right, a Character Select screen will appear.
Submitted by Erik Pfannkuche
Extra Puzzles
For more puzzles, press A, Up, B, Down at the Title Screen.
Submitted by Alex Sabnani
Level Skip
While playing press: Z, R, L, and A
simultaneously to skip to the next stage.
Submitted by CODE MAN