Press Start to pause game play, then press Select. The preview window will
not show the next piece when game play resumes.
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.
Allow the game to remain at the main screen until demonstration mode begins.
Press Select to display a screen featuring swimming fish. Press A to return
to the next part of demonstration mode, then press A again to display a
screen with confetti and the Nintendo logo. Press B to return to the next
part of demonstration mode, then press B. Eventually a screen featuring a
blackboard will appear.
Press Start + Select + A + B during game play.
Continue game play:
Press Start to pause game play in single player mode, then turn off the Game
Boy. A continue screen will appear when the Game Boy is turned on 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.