Game Guides, Cheats, Codes, Hints and Walkthroughs for Double Dragon Advance on GameBoy Adv..

10 credits
In the options prompt, hold Select and push L, R, Down, L, R, Down, L, R, Right.

Background music selection
In the options prompt, hold Select and push R, L, R, L.

Expert mode
In the options prompt, hold Select and push Up(2), Down(2), Left, Right, Left, Right.