Arcade mode
 
 At the main menu, press Select, Start, Select(2), Start, Select(3),
 Start, Select(4), Start. If you entered the code correctly, the
 phrase "Arcade mode" will appear. Then, all secret areas from the
 arcade version of the game will now be accessible.
 
  Game Shark Codez:
 
                     
  Joker Command         
  D008E058 ????
                     
  Infinite Lives P1     
  8006E7F0 0007
                     
  Infinite Ammo P1      
  8006E844 0008
                     
  Infinite Lives P2     
  8006E880 0007
                     
  Infinite Ammo P2      
  8006E8D4 0008
                     
  All Mission Available 
  80069CFC 0001
  80069D00 0001
  8006A0A8 0001
  8006E898 0001
                     
  Have Special Weapons  
  8006E840 0001
  8006E840 0002
  8006E8D0 0001
  8006E8D0 0002