Moto GP 3 cheats and cheat codes for Playstation 2

Simulation mode:
When playing the game with this mode, remember that you're playing a more sim-
like game. Therefore if you lean too far over, your rider will topple over and fall. 
This mode should only be played once you have relatively mastered gameplay 
mechanics.

Challenge mode:
There are over hundred separate challenges which will unlock many items once 
they have been beaten. Items you can obtain range from real-life pictures to 
hidden characters. Notable hidden characters include Jake Slate from Namco's 
Dead to Rights. The game has a total of 41 bikes of which 12 are immediately 
available. Submitted by FrantiX34

          
Unlock riders by beating these challenges:
#10 ROBERTS JR, Kenny (Usa) Challenge #5 
#15 GIBERNAU, Sete (Spa) Challenge #14 
#17 VAN DER GOORBERGH, Jurgen (Ned) Challenge #21 
#19 JACQUE, Olivier (Fra) Challenge #90 
#20 RIBA, Pere (Spa) Challenge #17 
#21 HOPKINS, John (Aus) Challenge #18 
#3 BIAGGI, Max (Ita) Challenge #10 
#31 HARADA, Tetsuya (Jap) Challenge #3 
#4 BARROS, Alex (Bra) Challenge #9 
#46 ROSSI, Valentino (Ita) Challenge #12 
#55 LACONI, Regis (Fra) Challenge #19 
#56 NAKANO, Shinya (Jap) Challenge #11 
#6 ABE, Norick (Jap) Challenge #4 
#65 CAPIROSSI, Loris (Ita) Challenge #16 
#7 CHECA, Carlos (Spa) Challenge #7 
#74 KATO, Daijiro (Jap) Challenge #6 
#8 McCOY, Garry (Aus) Challenge #13 
#9 AOKI, Nobuatsu (Jap) Challenge #91 
#99 McWILLIAMS, Jeremy (UK) Challenge #20 

Unlock the Fictional riders by beating these challenges:
Hitomi Yoshino - Challenge #85 
Jack Slate - Challenge #62 
Susumu Hori - Challenge #1 

Unlock the Legend riders by beating these challenges:
DOOHAN, Mick (Aus) - Challenge #15 
GARDNER, Wayne (Aus) - Challenge #87 
RAINEY, Wayne (Usa) - Challenge #2 
SCHWANTZ, Kevin (Usa) - Challenge #12