Background Test (US Version)
Hold Left + B on Controller 1 and A on Controller 2 at the same time before the title screen appears (at the console power up/reset sequence or after the game over screen). Press Left or Right on Controller 1 to change the menu options. Press Up or Down to select the menu option. Press and hold Select to hide the menu.
Continue (Japanese Version)
When you get a game over and you're at the blue Afterburner screen, press A, A, A, A, B, Up, Up, Down, Down, Down, Down, Down and Down. If done right, you'll continue where you left off.
Extra Missiles (Japan Version)
At the beginning of the stages 3, 5, 11, 16 and 21, while refueling/reloading weapons on the ground, press and hold the corresponding button code from the table below, and hold it during take off.
Effect Code Stage 11 - +30 missiles Right on Controller 2 Stage 16 - +50 missiles Right + B on Controller 2 Stage 21 - +30 missiles Down on Controller 2 Stage 3 - +30 missiles Left on Controller 2 Stage 5 - +50 missiles Left + B on Controller 2
Extra Missiles (US Version)
At the beginning of the stage 5, while refueling/reloading weapons on the ground, press Up + Right on Controller 2 and A + Start on Controller 1 at the same time and hold it during the take off. You'll get an extra 40 missiles.
Hard Mode (Code-Based Activation)
At the title screen, hold Right + A + B + Select on Controller 1 and Left + A on Controller 2 at the same time, then press Start on Controller 1.
When your game is over and you're at the blue After Burner screen, press Left, Left, Left, B, B, B, A, A, A, Start. You will continue on the level you just got a game over on.
Contributed By: Retro.
Reversed Mode (Japan-only)
To activate reversed mode on the Japan release, hold A and B on Player 2's controller and start the game.
Sound Test (Japanese version)
At the title screen press and hold the A button then press Start.
Stage Select (US Version)
During gameplay, press Select to pause it, then press Down + Left + A on Controller 2 and Down + Left on Controller 1 at the same time. Press Up or Down to select a stage, and press Select to play. This cheat can be done in all levels except 8 and 17.
View Credits (Japan-only)
Power the console on, wait for the 6 demo sequences to be played, then press A, A, A, A, B, Up, Up, Down, Down, Down, Down, Down, Down, Start.
Once you've beat the game, press any button to continue to the Main Menu again. Now, when you start playing again, you'll be in a harder mode. The game won't tell you this, but you can see by harder enemies in the first stages who you'd normally come across only in later stages.
Unlockable How to Unlock Harder mode Beat the game once.
Contributed By: Kaas.
Before you turn on the game, press and hold down the b button, then turn on the game. You'll be able to listen to 5 songs.
Contributed By: Brian T.
Before starting your game, plug in a controller to slot 2. Hold A and B on that controller, and then tap START on the controller in slot 1.
Contributed By: !.ACA.!.
Sound Test (US Version)
Before the title screen appears, hold B and you'll enter a sound test.
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