Passwords
 
 Go to the options screen and enter one of the following passwords:
 
                         
  Password 
  What It Does      
                         
  267776   
  8 Credits         
                         
  220969   
  Start with 9 ships
                         
  180771   
  Invisible ship    
                         
  713948   
  Start on level 2  
                         
  900277   
  Start on level 3  
                         
  213490   
  Start on level 4  
                         
  866141   
  Start on level 5  
                         
  321904   
  Start on level 6  
                         
  196861   
  Start on level 7  
                         
  040186   
  Start on level 8  
                         
  841003   
  Start on level 9  
                         
  216409   
  Start on Criticus 
                         
  300167   
  End sequence      
                         
  Game Shark Codez:
 
                   
  Infinite Energy Player 1 
  801E997E 008C
                   
  Infinite Energy Player 2 
  801E9B1E 008C
                   
  Infinite Bombs Player 1  
  801EBC8C 0003
                   
  Infinite Bombs Player 2  
  801EC32C 0003