:: video games cheat and cheat codes ::                                            

Nintendo 64 - Dr. Mario 64 cheats

Unlock Metal Mario in VS mode:
Finish the story mode with Wario in normal, hard, or super hard modes 
without losing once. Then, beat Rudy, after beat Metal Mario also without 
losing.

Unlock Vampire Wario in VS mode:
Finish the story mode with Dr. Mario in normal, hard, or super hard modes 
without losing once. Then, beat Rudy, after beat Vampire Wario also without 
losing.

Enable S.Hard mode:
Go to story mode and highlight the "Hard" option. 
Hit Z to change the difficulty level.

Increase the computer AI of character one star to Hard:
Go to the character selection screen in VS mode, and highlight a character 
Hold L and press A.

Increase the computer AI of character two stars to S.Hard:
Go to the character selection screen in VS mode, and highlight a character 
Hold L and press B.