Press Start + Select + A + B during game play.

When a block is falling down, move it all the way against the left or right wall of the screen. Continue to hold down Left or Right and press A or B very quickly to watch the block rise back up into the air. Note: This trick does not work with the solid square shaped blocks.

Hold Left or Right while any piece except a straight bar or block is descending until it is against the wall. Then, keep holding Left or Right and rapidly tap A.

Press Start to pause game play, then press Select. The preview window will not show the next piece when game play resumes.

Everytime you move a pice over, the came counts it. The more you move it, the game thinks you have more trouble with that certan piece. You can exploit this everytime you get a Tetris (Long "I" shape) piece, just move it from side to side as it falls. Youi will get it more often everytime that you do so.

To do this, press select during a game. To make it come back, press select again.

Remain idle at the main menu for about 20 seconds. A demo game will begin. Press A and remain idle for another 20 seconds. Fish will appear. If you repeat these steps, flying triangles will appear.