Level select
 
 Enter Square, Circle, X, Triangle, Triangle, X, Circle, X as a
 password. Then, any level up to level 30 may be selected.
 Alternatively, enter Square, Triangle, Circle, Triangle, X, Triangle,
 Square, X as a password. 
 
 Bonus level select
 
 Enter Square, Square, Square, Triangle, Circle, Triangle, Square,
 Square as a password.
 
 Weapons
 
 Enter Square, X, Circle, Square, X, Square, Circle, Square as a
 password. 
 
 Infinite lives
 
 Enter Circle, X, X, Triangle, Square, Triangle, Square, Circle as a
 password. 
 
 Hidden ship
 
 Enter X, X, X, Square, Triangle, Circle, X, Triangle as a password.
 
 No bonus points reset
 
 Enter Square, Triangle, X, Triangle, Circle, Square, Triangle, X as a
 password. 
 
 Firewalls
 
 Enter X, X, Square, X, X, X, Triangle, Triangle as a password.
 
 H²o mode
 
 Enter Circle, X, Square, Triangle, Triangle, Circle, Triangle, Circle
 as a password.
 
 Disable cheats
 
 Enter Square, Square, X, Circle, Circle, Circle, Circle, Triangle as
 a password. 
 
 Level passwords
 
 
 
  Level 
  Password                                                            
 
 
  3     
  Circle, X, Circle, Circle, Square, Triangle, X, Triangle            
 
 
  4     
  Circle, Circle, Triangle, Circle, Triangle, Circle, Square, Square  
 
 
  5     
  Square, Triangle, Square, Triangle, Square, Triangle, Triangle,     
 
  Circle                                                              
 
 
  6     
  Square, Square, Circle, Square, Triangle, X, Triangle, X            
 
 
  7     
  X, Triangle, Circle, Square, X, Triangle, Circle, Triangle          
 
 
  8     
  Square, Circle, Circle, Triangle, Triangle, Square, Triangle, Square
 
 
  9     
  Square, Circle, X, Triangle, Square, Square, X, Circle              
 
 
  10    
  X, Triangle, Square, Circle, Triangle, X, X, X                      
 
 
  11    
  Circle, Square, Triangle, Square, Circle, Triangle, Square, Triangle
 
 
  12    
  Circle, X, X, X, Triangle, X, X, Square                             
 
 
  13    
  Square, Triangle, Triangle, Circle, Circle, X, Circle, Circle       
 
 
  14    
  Square, Square, Triangle, Circle, Circle, Triangle, Circle, X       
 
 
  15    
  Circle, Triangle, X, Square, Circle, Triangle, Triangle, Triangle   
 
 
  16    
  Circle, Square, Triangle, X, Circle, Circle, Circle, Square         
 
 
  17    
  X, Circle, Triangle, X, Square, Square, Square, Circle              
 
 
  18    
  Circle, Triangle, Circle, Circle, Triangle, Square, Square, X       
 
 
  19    
  Square, X, Circle, Square, Circle, X, X, Triangle                   
 
 
  20    
  Circle, Square, Triangle, Square, Square, Square, Square, Square    
 
 
  21    
  Circle, Circle, Circle, Circle, Triangle, X, Triangle, Circle       
 
 
  22    
  Circle, X, Circle, Triangle, X, Circle, Triangle, X                 
 
 
  23    
  Square, Square, Triangle, Circle, Triangle, X, Circle, Triangle     
 
 
  24    
  Circle, Circle, Square, Triangle, Square, Triangle, Triangle, Square
 
 
  25    
  Circle, X, Triangle, X, Square, Triangle, X, Circle                 
 
 
  26    
  Square, Circle, Circle, Circle, X, Circle, X, X                     
 
 
  27    
  Square, Square, Triangle, Circle, X, X, Square, Triangle            
 
  Game Shark Codez:
 
         
  Infinite Lives P1                           
  8011B354 0103
         
  Infinite Shields P1                         
  8011B1FC 1117
         
  Infinite Special Weapon Ammo & Firewalls P1 
  8011B212 0A63
         
  Infinite Lives P2                           
  8011B36C 0103
         
  Infinite Shields P2                         
  8011B27C 0FFA
         
  Infinite Special Weapon Ammo & Firewalls P2 
  8011B293 0A63
         
  Driller Counter                             
  8011B488 0E60