Defender CodeBreaker Codes (USA)
This page contains CodeBreaker 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) Gameshark Codes and check for your code there instead!
Defender CodeBreaker Master Code
Unlimited Lives (XGB): 3300563C 0009
Unlimited Health (XGB): 3300563D 0005
Unlimited Bombs (XGM): 8300563E 0009
Quick Score Gain (XGM): 83005640 FFFF
Unlimited Lives (Classic & XG): 32001F59 0009
Quick Score Gain (Classic & XG): 82003304 FFFF
Unlimited Bombs (Classic & XG): 32003539 0003
Max Score (XGM)
Max Score (Classic & XG)