The New Tetris cheats and cheat codes for Nintendo 64

Select the single player mode, then enter the following 
cheat codes as name:

Delete line totals and reset Wonders
Enter name: "O1DERS", after highlight OK and hit A.

Delete line totals, reset Wonders, delete high scores
Enter name: "1N175R4M", after highlight OK and hit A.

Faster blocks:
Enter name: "2FAST4U", after highlight  OK and hit A. 

Faster CPU blocks:
Enter name: "AI2EZ4U", after highlight OK and hit A. 

Unlock music kaleidoscope
Go to the audio options and select the "Haluci" song and set music mode 
to "Choose". Choose single player mode, enter "HALUCI" as a name, after 
highlight "OK" and hit A.