Watch All Video Sequences:

 At the title  screen when the words "Press Start Button" are flashing,
 press Z, A, Z, A, B, A, B, Y, C, A, C, A.  The  game will show all the
 video sequences. Press Start to skip any video sequence.
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Do the following cheats at the title screen when the words "Press Start
Button" are flashing.

Stage skip:

 Press and hold C, then press and hold B, then  press  and hold A, then
 press and hold Up, then press and hold L.  Release  A, then C, then L,
 then Up. A voice will say, "Black hole engaged."  Now you can activate
 the cheats during play.  To go back one level, press and hold A, B, C,
 and Up. Then press L. To go forward one level, press and hold X, Y, Z,
 and Up. Then press L.
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Infinite fuel & weapons:

 Press L, A, Z, Y, A, Down, Down.  You'll hear a voice say,  "There she
 is! Beans and bullets on the way!"  To  restore  fuel  and ammo during
 gameplay, pause the game and  unpause  it by pressing Start.  When you
 unpause the game, fuel and ammo will be refilled.
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Invincibility:

 Press and hold  A, then press and hold B, then press and hold C.  Then
 release C, then B, then A.  Next, press  B, A, B, Y, press and hold X,
 press Up, press and hold Down, and then release X.  A confirming voice
 will say,  "Youºre on the wrong team."  When  you start the game, your
 chopper is invincible!