Control Yoshi
In the ending credits for the VS mode hold select and use the D-Pad to control Yoshi.
Extreme Mode
To enter extreme mode on 1 Player VS mode, highlight the hard setting and hold L and up and press start. The background should change to red.
How to control the cursor in "How to Improve Mode"
In any of the sessions hold down the "R" button. You can now control the cursor and try out the chains, combos, and skill chains on your own.
Play as Rival Characters
In 2 player VS/Time Trial mode push L and R on BOTH controllers. The rivals characters will appear.
Play Rescued Characters
In 1 player VS mode push X and Y buttons untill you strat the match. You will be directed to the player select screen.
Remove stop command
To remove the stop time when you clear a combo/chain, at the start when Yoshi says "Nintendo" press B,A,L,L. A sound will confirm the code.
Special, Extra Level Password
Select 1 player, then go to passwords and enter: "FP5D29J!" to get extra levels.