CheatCodes.com has all the official Grind Session PSX cheats to unlock everything. If you know of any that we don't have, please let us know.
All published and official codes as of Saturday May 18, 2013 for Grind Session are shown below.
Beat Huntington in first, or second place. Then you will unlock a photo shoot. As the loading screen says get 8,000 points. When you have succesfully done this, the screen will say you have unlocked secret characters.
Get all keys, photos, and coins in both wings of the dream house with any character to unlock Master Ao, the ultimate skater (full vert, street, balance meter, plus every trick).
To unlock level 8 (Huntington), go to the big gray ramp with a blue streak on the bottom that is in front of a wall. Go off the ramp, and do an air trick (e.g. Christ Air). If you hit the wall in the middle of the trick, you will land it perfectly and get full points.
Found some tricks that we don't have? Got some helpful hints, tips, or tactics we don't know about? Tell us and you could win a free PlayStation game (or any other game you want for any video game system)!