Oddworld: Abe's Oddysee Cheats (PlayStation)

Hold R1 and press Triangle, Up, Circle, Left, X, Down, Square, Right during gameplay.
Select any sound to solve the game's voice puzzles.

Hold R1 and press Up, Left, Right, Square, Circle, Triangle, Square, Right, Left, Up,
Right at the first options screen, where Abe says "Hello."

On the screen where Abe says "Hello", hold R1 and press Down, Right,
  Left, Right, Square, Circle, Square, Triangle, Circle, Square, Right and Left

On the last level when the clock starts go down the ledges and on the second from last
ledge do a running jump and you should land in a short cut.

  Be sure that the option light bulb lights up.

Hold R1 and press Down, Right, Left, Right, Square, Circle, Square, Triangle, Circle,
Square, Right, Left at the first options screen, where Abe says "Hello."

Hold R1 and press Circle, Triangle, Square, X, Down, Down, Down, Circle, Triangle, Square,
X during gameplay.

Do this while playing. Hold R1 and then up, left, right, square, circle, X.

Hold R1 and press Up, Left, Right, Square, Circle, X during gameplay. Abe will produce a
green air mine every time he farts.

Hold R1 and press up, left, right, square, circle, triangle, square, right, left, up,
right.

Hold R1 and press down, right, left, right, square, circle, square, triangle, circle,
square, right, left.