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Gamecube - Monster Jam Maximum Destruction cheats

Unlock Trucks 
Complete the following tasks: 

Unlock 1983 Grave Digger
Win Season One. 

Unlock 20th Anniversary Grave Digger
Win Season Two on Cash Grab Mode on Hard with a championship truck. 

Unlock Armored Force
Win Season Three on Cash Grab Mode on Easy with a championship truck. 

Unlock Big Yellow
Win Season Two on Cash Grab Mode on Extreme with a championship truck. 

Unlock Bull Dog
Win Season Two on Cash Grab Mode on Easy with a championship truck. 

Unlock Dog Pound
Win Season One with a championship truck. 

Unlock Hooch
Win Season Two on Extreme with a championship truck. 

Unlock Incredible Hulk
Win Season Three on Cash Grab Mode on Hard with a championship truck. 

Unlock IP Truck
Win Season One on Extreme with a championship truck.