Tony Hawk's Pro Skater 2 

Special meter always full 
Pause the game, then hold L and press C-Left, C-Down, C-Up, Right, C-Right, 
Right to always have a full special meter. If you entered the code correctly, the pause screen will shake.

Perfect balance 
Pause the game, then hold L and press C-Down, Right, Down, C-Left, C-Down, C-Up, C-Right, C-Left.
If you entered the code correctly, the pause screen will shake.

10x points mutiplier 
Pause the game, then hold L and press C-Down(4), C-Left, C-Right, Right. If you 
entered the code correctly, the pause screen will shake.

Raise stats to 10 
Pause the game, then hold L and press Down, Up, C-Up, C-Left, Down, Up, C-Up. If 
you entered the code correctly, the pause screen will shake.

Raise stats to 13 
Pause the game, then hold L and press C-Down, C-Right(2), C-Up, Up, Down, Right, 
Left. If you entered the code correctly, the pause screen will shake.

Double moon physics 
Pause the game, then hold L and press C-Down, C-Left, C-Right, C-Left, Up, 
C-Down, Down, Right, C-Down(2). If you entered the code correctly, the pause screen will shake.

Skip to restart (random start locations) 
Pause the game, then hold L and press C-Left, C-Down, C-Right, Down, C-Up(2). If 
you entered the code correctly, the pause screen will shake.

Simulation mode 
Pause the game, then hold L and press Left, C-Right, Right, Down, C-Down, Up(2). 
If you entered the code correctly, the pause screen will shake.

Super turbo mode 
Pause the game, then hold L and press Down, Left, C-Up, C-Down, C-Left, Right, 
Up. If you entered the code correctly, the pause screen will shake.

Slow-Nic mode (slow-motion tricks) 
Pause the game, then hold L and press C-Up, Down, Left, C-Left, C-Down, C-Up, 
C-Right. If you entered the code correctly, the pause screen will shake.

Turbo mode 
Pause the game, then hold L and press C-Left, C-Down, C-Up, Down, Up, Right to 
increase the speed of the game by 25%. If you entered the code correctly, the pause screen will shake.