Prince of Persia: The Two Thrones (PS2)

Restore all sand slots:
Hold L3 and quickly press Circle, Circle, X, Square, Square, X, Triangle, Triangle during game play.

Secret king sword weapon:
Press Start to pause game play, then press Up, Down, Up, Down, Left, Right, Left, Right, Circle, Square, Circle, Square.

Secret baby rattle weapon:
Successfully complete the game under the easy difficulty setting. Press Start to pause game play, then press Left, Left, Right, Right, Circle, Square, Square, Circle, Up, Down.

Secret telephone weapon:
Successfully complete the game under the normal difficulty setting. Press Start to pause game play, then press Right, Left, Right, Left, Down, Down, Up, Up, Circle, Square, Circle, Circle, Square, Square.

Secret swordfish weapon:
Successfully complete the game under the hard difficulty setting. Press Start to pause game play, then press Up, Up, Down, Down, Left, Right, Left, Right, Circle, Square, Circle, Square.

Secret chainsaw weapon:
Press Start to pause game play, then press Up, Down, Up, Down, Left, Right, Left, Right, Circle, Square, Circle, Square.

Easter Egg - Voice credits:
Play through the game until getting to the large courtyard just immediately before the first chariot sequence, during your second Dark Prince transformation. Look in the corner of the courtyard to find a hole in the ceiling which enemies appear from until you leave the area. Stab and hang from the panel near that hole to open the exit. Climb the pole nearest to the hole in the ceiling to hear a monotone female voice announce the game's voice credits.

Boss hint:
When you have to kill that lady boss who jumps from side to side, save a weapon called the Obliest in the scene before. You dont need to slow down time or go near her because the sword is like a boomerang, it comes back. Just keep throwing it at her.
(supplied by: thekingoftheworld)