Defender Gameshark Codes (USA)
This page contains Gameshark cheat codes for Defender (USA). If you're playing on an emulator you can usually input codes very easily by accessing a tab off the top of the toolbar. Anyone playing on a physical Gameboy will need to purchase a physical Gameshark device to use these codes.
If you're using an emulator and still can't figure out how to setup these codes, you're in luck! There's two common emulators for GBA games, the mGBA and VisualBoy Advance. Follow the link provided for the emulator you're using to be taken to a guide explaining how to get these codes working.
Don't see the code you're looking for on this page? Head on over to my Defender (USA) CodeBreaker Codes and check for your code there instead!
Defender Gameshark Mastercode: D20AD3A4 0000F1BF
Classic & XG Mode Unlimited Bombs: 824E0BBC 0000A263
Classic & XG Mode Quick Score Gain: D0049106 00001173
XGB Mode Unlimited Bombs: DD0D57E4 00007D89
XGB Mode Unlimited Health: 820E0888 0000A202
XGB Mode Unlimited Lives: DD0F5EC0 00002F00
XGB Mode Unlimited Quick Score Gain: D4059566 00001162
XGB Mode Unlimited Score: DF0A7B94 00007458
Classic & XG Modes Unlimited Lives
Classic & XG Modes Max Score
If any of these codes do not work for you, please leave a comment below.