Transformers - Platform: Playstation 1

Cheats:
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Enter the following button codes during the "Difficulty Select" 
screen to get the desired results:

Starship Level Complete: 
Left, Left, Right, Circle Circle, Right, Right, Left 

Alaska Level Complete: 
R1, Circle, R1, Square, Left, Left, Right, Left 

Deep Amazon Level Complete: 
Left, Right, Left, Left, Right, R1, R2, Circle 

Earth Level Complete: 
R2, R1, L1, L2, Square, Circle, Square, Circle 

Mid Atlantic Level Complete: 
Circle, Square, Circle, Square, Right, Left, Left, Right