Hard mode
 
 Hold Down + Square + L1 + R2 and power on the PlayStation. Continue
 to hold the buttons until the phrase "Team Neo Blood" disappears. If
 you entered the code correctly, "Normal Mode" will be replaced with
 "Hard Mode" and "Hard" will appear above the two player/computer
 chaos bar. -From: Taylortoe1@aol.com 
 
 Play as Bosses (Japanese version)
 
 At the Arc System Works logo, press Down + Square + L1 + R2. Then,
 release the buttons when the phrase "Team Neo Blood" disappears. Now
 Testament, Justice, and Baiken may be selected in versus mode.
 
 Alternate colors
 
 At the character selection screen, press Square, Triangle, Circle, or
 X. 
 
  Game Shark Codez:
 
     
  Infinite Time                                         
  8007BF72 0000
     
  Infinite Health P1                                    
  8007CB98 00BC
     
  Max Power P1                                          
  8007C8B8 0040
     
  Character Modifier P1                                 
  80139048 000?
     
  Infinite Health P2                                    
  8007CB68 00BC
     
  Max Power P2                                          
  8007CB88 0040
     
  Character Modifier P2                                 
  8013904C 000?
     
  Quantity Digits to Accompany Character Modifier Codes 
     
  0 - Potemkin                                          
  1 - Zato-1                                            
  2 - Sol-Badguy                                        
  3 - Ky Kiske                                          
  4 - Chipp Zanuee                                      
  5 - May                                               
  6 - Axl Low                                           
  7 - Millia Rage                                       
  8 - Kliff Undersn                                     
  9 - Dr.Baldhead                                       
 
  Secret Characters:                                    
 
  A - Testament                                         
  B - Justice                                           
  C - Baiken