Press L1 + R2 at the neighborhood selection screen.

Enter the password HANOILBKJO to play in free mode.

To give someone a fist, preferably a person in a car, press R1 and R2 together to do it on your right side or L1 and L2 to do it on your left side. If it is done correctly, you will hear the driver say something like "Arrest that punk!"

Enter the password SAVAGEAPES to play as a Gorilla on a BMX Bike.

From the Load/Save screen, enter the following password KFKFKFOEKJ and you will start the game with the Pantera.

To start with the STS-1 bike, enter the password IFKFKFKGKJ.

From the Load/Save screen enter the password FDFKFKHCJK to play as Zaskar.

Enter the password XFIFTYONEX to play as an Alien on a BMX Bike.

Level  Password
1      eflcifcgkj
2      iflcifccki
3      mflcifcokj
4      aflcifckkj
5      fhclfigcjl
6      flclficcil
7      fpclfiocjl
8      fdclfikcjl
9      kflcifcgii
10     oflcifccii
11     cflcifcoij
12     gflcifckij
13     ffclfigccj
14     fjclficcij
15     fnclfiocjj

To make your tires and the ground have no friction between them you must stop the bike and tap CIRCLE repeatedly but do not hold it down. If you did it right he will pedal but he won't move!