All Working Teenage Mutant Ninja Turtles Cheats - GBA

Very hard difficulty setting
Press [Up]x2, [Down]x2, [Left], [Right], [Left], [Right], [B], [A] at the title screen.

Password notes
Use the following key when entering the passwords.

[L]: Leonardo
[M]: Michaelangelo
[D]: Donatello
[R]: Raphael
Splinter mode
Enter "LSLML" as a password.

Alternate Donatello costume
Enter "RRSLR" as a password. Hold [L] or [R] when selecting Donatello at the character selection screen.

Alternate Michaelangelo costume
Enter "RLSLS" as a password. Hold [L] or [R] when selecting Michaelangelo at the character selection screen.

Playmates toy database
Enter "LSDRM" as a password.

Alternate sound effects
Enter "DDDML" as a password.

Raphael gains attacking power
Enter "RDSRL" as a password.

Michaelangelo gains attacking power
Enter "MSRMM" as a password.

Leonardo has unlimited fire shurikens and pizza always appears
Enter "SSLDM" as a password.

Raphael has double power-up effects
Enter "RSSSR" as a password.

Michaelangelo has double power-up effects
Enter "RLMSM" as a password.

Leonardo has double power-up effects
Enter "RSDMM" as a password.

Leonardo has double defense
Enter "LDSMS" as a password.

Raphael has double defense
Enter "SDRML" as a password.

Bonus course 2
Enter "SSLDM" as a password.

Bonus course 4
Enter "SRLMD" as a password.