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Playstation - Hydro Thunder cheats

Cheat mode
Highlight the "Memory Card" selection and push R1, R2, Circle, R2, R1. 
A sound will confirm the correct code entry.

Hydro Thunder Game Shark Codes:

Unlimited Boost on Pick-Up    
80050B86 2400
             
Unlimited Countdown Timer     
800972DE 0063
                            
Always Win
8009DD58 0001
            
Stop Track Timer             
800972E2 0000
             
Maximum Cash                     
800966B4 FFFF

All Tracks & Boats    
800A223C 0000
800A223E 0000
800A2240 0000
800A2242 0000
800A2244 0000
800A2246 0000
800A2248 0000
             
Bonus Tracks & Boats  
300A223C 0000
300A223E 0000
300A2242 0000
300A2241 0000
300A2247 0000
300A2248 0000
300A2246 0000

Hard Tracks & Boats   
300A2243 0000
300A223F 0000
300A2244 0000

Medium Tracks & Boats 
300A2245 0000
300A223D 0000
300A2240 0000