Contra: The Alien Wars Gameshark Codes (USA)
This page contains all of the Gameshark codes I have for Contra: The Alien Wars (USA), a game for the Game Boy handheld console. If you are playing on a physical Game Boy/GBC then you'll need to purchase a physical Gameshark device to use the codes that you find on this page.
For those of you who are using an Emulator, you can normally input codes by going to the Cheats menu. Depending on the Emulator you use the process will be different, head over to my RetroArch, VisualBoy Advance (Depreciated), VisualBoy Advance-M, mGBA or Sameboy guides to learn how to use these codes with the Emulator of your choice.
If you don't see the code you are looking for on this page you should return to my Contra: The Alien Wars Guides Index and choose a different section.
Invincibility: 01FFF2D6
Infinite Lives: 010288C8
Infinite Lives: 0109D8C1
Infinite Bombs: 0109DAC1
Infinite Continues: 0109DBC1
Stage Modifier: 01??D7C1
(Difficulty Modifier) Easy: 0100D6C1
(Difficulty Modifier) Normal: 0101D6C1
(Difficulty Modifier) Hard: 0102D6C1
(Difficulty Modifier) Maniac: 0103D6C1
(Gun Modifier) Normal: 01006AC5
(Gun Modifier) Spreader: 01016AC5
(Gun Modifier) Flame: 01026AC5
(Gun Modifier) Cannon: 01036AC5
(Gun Modifier) Homing: 01046AC5
Options Menu Sound Type 1 (Stereo): 01002D5C
Options Menu Sound Type 1 (Mono): 01102D5C
Options Menu Sound Type 1 (FX): 01202D5C
Tank Invisible: 01FFF5D6
Weapon Modifier: 01??E8C1