Space Channel 5 - Platform: Gameboy Advance

Cpu Control:
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Hold L + R and press Up, Left, A, Left, A, Down, Right, B, Right, B 
during game play. A sound will confirm correct code entry. The game will 
continue by itself under CPU control.

Extra Mode:
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To unlock extra mode, complete the game once with any percentage then 
watch the credits. At the end of the staff roll, listen carefully to 
hear an 'up' pattern when the music ends. If done correctly, you will 
be able to play in extra mode, which leads you to other rooms in the game. 
To play extra mode, load the file that reads [Extra Mode] in the name archive, 
then select 'Continue'.