Jackie Chan Adventures: Legend of the Dark Hand Cheats for Gameboy Advance
To choose the level you want to play hold R and press B, A, Left, Down, Up, Right at the 'Title' screen.
Enter the following codes at the 'Title' Screen to unlock the corresponding effect. If a code has been entered correctly you will hear a confirmation sound.
Hold A and press B, Left, Up, Right, Down.
Unlock Special Mode 1:
Hold L and press B, A, Up, Up, Up, Down, Down, Down.
Unlock Special Mode 2:
Hold L+R and press B, A, Left, A, Right, A, Left, A.
At the ''Press Start '' screen, hold are and press B, A, Left, Down, Up, Right to unlock all levels and scrolls. Alternately, hold are and press B, A, Up, Down, Left, Right at the ''Press Start'' screen
Press and hold R, then press B, A, UP, DOWN, LEFT, RIGHT at the Press Start screen to unlock everything.