World Heroes
Boss Code
At the title screen, hit SELECT, A, Up, R, Up, and SELECT.
You will hear a quick ringing sound.
Now, to be Neo Geeguse, hold SELECT and R and go to the PLAYER SELECT screen.
To be Dio, hold SELECT and L and go to the PLAYER SELECT screen.
Color Change
Select either a 1 or 2 player game, then HIGHLIGHT your player.
Hit SELECT and START at the same time to change color.
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