Micro Machines 64 Turbo 

Nine lives in challenge mode 
Enter "MOGSLIFE" as a name at the character selection screen:
If you entered the code correctly, you will hear a sound.
After accepting that name, re-enter the name of your choice for that character and select challenge mode.

Tanks in multi-player mode 
Enter "ALLTANKS" as a name at the character selection screen in multi-player mode.
If you entered the code correctly, you will hear a sound and your name will change back to how it first appeared.

Change into objects 
Pause the game and press Down(2), Up(2), Right(2), Left(2). If you entered the 
code correctly, you will hear a sound. Enter the code again to return to normal.

Behind car view 
Pause the game and press Left, Right, C-Left, C-Right, Left, Right, C-Left, 
C-Right. If you entered the code correctly, you will hear a sound. Enter the 

code again to return to normal.
High bounces 
Pause the game and press C-Left, Right(2), Down, Up, Down, Left, Down(2). If you 
entered the code correctly, you will hear a sound. Enter the code again to return to normal.

Slow CPU racers 
Pause the game and press C-Right, C-Up, C-Left, C-Down, C-Right, C-Up, C-Left, 
C-Down. If you entered the code correctly, you will hear a sound. Enter the code again to return to normal.

Turbo mode 
Pause the game and press C-Left, C-Down, C-Right, C-Left, C-Up, C-Down(4).
If you entered the code correctly, you will hear a sound. Enter the code again to return to normal.

Debug mode 
Pause the game and press C-Left, Up, Down(2), C-Left, C-Right(2), C-Up, C-Down 
to enable debug mode. Then the following debug functions may be used:

Instant win 
While playing a game, press Z + C-Down. Note: This can not be done during the time trials.

Destroy all cars 
While playing a game, hold X + C-Up + C-Right + C-Left.

CPU takes control of car 
While playing a game, hold Z and press C-Left.

Change camera angle 
While playing a game, hold Z and press Up, Down, Left or Right.

Zoom camera view 
While playing a game, hold Z and press L or R.