Ranma ½: Battle Renaissance Cheats (PSX)

Set the CPU level to "1", time limit to "30", and rounds won to "1". Then, select story
mode and uncover all stones except one. Now save and reload the game at regular intervals
to avoid mistakes. A special red stone will appear to the right of the starting location
after only one stone remains. Uncover the red stone to enter sound test mode.
 

 Game Shark Codes 

Select versus mode. Then on the character select screen, press the following buttons. For
player one, highlight Ranma and press Right(3), Down, Left(3) Up, and any button to select
Ranma. For player two, highlight Ranma's friend and press Left(3), Up, Right(3), Down, and
any button.

When selecting a character in either versus mode or battle mode, hold L1 + R1.