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.
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.
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.
Play as Rival Characters:
In 2 player VS/Time Trial mode push L and R on BOTH controllers. The rivals characters will appear.
Extra Puzzles:
To access the hidden puzzle stages in puzzle mode, enter this code in the Password Game "FP5D29J!"
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.
Control Yoshi:
In the ending credits for the VS mode hold select and use the D-Pad to control Yoshi.
The Genie has more
Tetris Attack Cheats at CheatingDome.com.