All ships powered up
At the main menu, press Right, L1, Up(2), Down, Right, R2, L2, R2, Down, Up, Down. If you entered the code correctly, you will hear the sound of an explosion. Select any ship, begin the game, then quit. Now all four ships will be powered-up and Sector 5 will be available for game play.
Wraith ship
Enable the "All ships powered up" code. Then at the main menu, press Left, Right, L1, Left, Right, L1, R2, R2, L2, Left, Right, Up. If you entered the code correctly, you will hear the sound of an explosion. Select any ship, begin the game, then quit. Now the Wraith ship and Sector 8 will be available for game play.
Alternate planets
At the main menu, press Down, Up, L1, Right, L1, Up, Right, Select, Right, R2, L1, L2. If you entered the code correctly, you will hear the sound of an explosion. Now faces of the development team will appear in the place of the planets in the first four levels. The next four levels will have other objects replacing the planets. Note: This code may not be enabled with the "All ships powered up" or "Wraith ship" code.
Bonus levels
At the main menu, press L1, Left, L2, Down, Select, Left, Down, R2(3), Select, Up. If you entered the code correctly, you will hear the sound of an explosion. Now four bonus missions that feature World War II aircraft and other hidden targets will be accessible. Note: This code may not be enabled with the "All ships powered up" or "Wraith ship" code.