Tetris

Level 10:
Hold A and press Start when selecting a level to begin game play on level 10.

Expert mode:
Press Select during game play to remove the preview of the next block to appear.
Information in this section was contributed by navy2.

Extra points:
Allow the demonstration mode to run. Press Start while the screen is blinking after the CPU forms a Tetris. Begin a game to collect the points from the demonstration game.

Restart with points:
After getting a Tetris during game play, press all the controller buttons to reset the game. Your next game start with the points from the previous game.
Information in this section was contributed by Nathan Sheahan.