Turbo Mode 
Select single player mode, enter 2FAST4U as a name, then 
highlight "OK" and press A. When the game begins, the blocks 
will eventually fall very quickly.

Delete line totals and reset Wonders 
Select single player mode, enter O1DERS as a name, 
then highlight "OK" and press A.

Delete line totals, reset Wonders, erase high scores 
Select single player mode, enter 1N175R4M as a name, 
then highlight "OK" and press A.

Music Kaleidoscope 
Enter the audio options screen and set the song to "Haluci" and 
the music mode to "Choose". Then select single player mode, enter 
"HALUCI" as a name, then highlight "OK" and press A. A kaleidoscope 
will now appear in place of the game. Note: The Nintendo 64 must be 
reset to quit this mode.