The following are known CodeBreaker Codes for Defender on Nintendo Game Boy Advance (GBA).

The codes should work with the region specified but may work for other regions as well.

• Master Code – Must Be On
  9EB55B78 81A4
  F2EAD3A5 F1BF
  D09FBCDD E872

XGB Codes

• Infinite Lives
  AD0F5EC0 2F00
• Infinite Health
  204E0888 A202
• Infinite Bombs
  AD3D57E5 7D89
• Quick Score Gain
  B4359566 1162
• Max Score
  D495B5DC 15F2
  CFDA7B95 7458

Classic & XG Codes

• Infinite Lives
  4DEE2AA8 A311
• Quick Score Gain
  F0B49106 1173
• Max Score
  F0B4910E 1DFB
  F9B4D106 1298
• Infinite Bombs
  245E0BBC A263